List of The Wild Thornberrys episodes

This is a complete listing of full-length episodes from the Nickelodeon animated television series The Wild Thornberrys.

Series overview

Season		Episodes	Originally aired		DVD release dates
			Season premiere	Season finale	Region 1	Region 4
	1	20	September 1, 1998 (1998-09-01)	April 1, 1999 (1999-04-01)	May 17, 2011	April 3, 2013
	2	37	August 16, 1999 (1999-08-16)	March 27, 2000 (2000-03-27)	November 8, 2011 (Part 1) April 24, 2012 (Part 2) January 15, 2013 (Part 3)	April 3, 2013
	3	20	September 12, 2000 (2000-09-12)	May 14, 2001 (2001-05-14)	June 11, 2013	April 12, 2013
	4	6	August 18, 2001 (2001-08-18)	June 1, 2002 (2002-06-01)	September 10, 2013	April 2, 2014
	5	8	February 3, 2003 (2003-02-03)	June 11, 2004 (2004-06-11)

Episodes

Season 1 (1998–99)

No. in series	No. in season	Title	Directed by	Written by	Original air date	Location
0	0	"Pilot"	Unknown	Unknown	September 1, 1998	Kenya
The Thornberrys get word that the only way to save the funding for their show is to film a segment about the black rhino, but Donnie bites the rhino's tail and causes it to charge. This episode was not included on any DVD release.
1	1	"Flood Warning"	Steve Ressel	Tom Stern	September 1, 1998	Mt Kilimanjaro, Tanzania
The Thornberrys are in Africa near Mt. Kilimanjaro to film lions. Debbie pleads with her mom to let her drive the comvee while she films and Marianne reluctantly consents. Debbie loses control of the comvee and it falls down a muddy river bank. Before they can get it out a storm erupts and the comvee is washed away. That night while camping near the river Debbie goes off on foot in pursuit of the comvee while Eliza goes off in pursuit of her and Darwin and Donnie go off in pursuit of her. Soon all become prey to a lion and two lionesses. Eliza will have to outwit them... Series Premiere
2	2	"Dinner With Darwin"	Sylvia Keulen	Steve Skrovan	September 3, 1998	Manaus, Brazil
Darwin sets off into the jungle to prove he still has his natural instincts. After a scary night in the jungle, he stumbles upon an empty shack and hides out, but the family who lives in the shack return to find Darwin.
3	3	"Bad Company"	Steve Ressel	Leslie Rieder	September 8, 1998	Manaus, Brazil
A swarm of marmosets overruns the Thornberrys camp, and it's up to Eliza to beat them at their own game. Meanwhile, Nigel and Marianne search for the bird-eating spider, and Debbie searches for ingredients to make shampoo.
4	4	"Gold Fever"	Anthony Bell	Adam Beechen	September 10, 1998	Galapagos Islands
When Eliza and Debbie discover an old treasure map on the Galapagos Islands, they set out to claim their ""riches."" Once the gold is discovered, however, greed sets in and the girls begin an all-out battle of trickery to get the gold away from each other.
5	5	"Matadi or Bust"	Sylvia Keulen	Carolyn Omine	September 15, 1998	Matadi, Democratic Republic of the Congo
The Thornberrys are in Africa along the banks of the Congo River. They have three days to catch a freighter at Matadi but if they miss it they will be stuck in Matadi for eight weeks. On the barge on the way to Matadi Eliza discovers that Kip and Biederman are also on board and they have a captured hippo with them which they plan to sell to a zoo. While helping the hippo escape Eliza, Darwin and Donnie fall overboard.
6	6	"Temple of Eliza"	Peter Avanzino	Barbara Herndon & Jill Gorey	September 17, 1998	Manaus, Brazil
Eliza comes to be treated as royalty among a pack of jaguars. Meanwhile, Nigel and Marianne attempt a better understanding of Donnie's behavior and ways of communicating.
7	7	"Vacant Lot"	Cathy Malkasian	Monica Piper	September 22, 1998	Brazil
A huge forest eating machine is destroying the Amazon forest. Nigel and Marianne set out to find government help in stopping it while Eliza teams up with the animals to fight it. Debbie's attempt to listen to a radio show are being thwarted by a radio that continually breaks down.
8	8	"Only Child"	Anthony Bell	Kate Boutilier	October 1, 1998	Brazil
The Thornberrys are camping on the banks of the Amazon river so Nigel can perfect his insect repellent formula. Eliza becomes fascinated with a fresh water dolphin that she sees out in the river. Debbie is bored as usual when a teenage girl from the village wanders into camp. She and Debbie begin hanging together while Eliza worries that she could be a legend come true...a dolphin that takes the form of a young girl.
9	9	"Iron Curtain"	Cathy Malkasian	Mark Palmer	October 6, 1998	Ngorongoro Crater, Tanzania
When the Thornberrys need some close-up footage of elephants, they travel to the Ngorongoro Game Preserve. At first Eliza believes it to be a prison, and helps a baby elephant escape to find her mom. She quickly changes her mind about the place when they tackle with some poachers out to trap and kill her pachyderm pals. Eliza and the elephants bust back into the Game Preserve where they are now safe. Meanwhile, Debbie loses Donnie and has to find him before he gets sent off to a university as "the missing link".
10	10	"Valley Girls"	Anthony Bell	David Regal	October 13, 1998	Uganda
The Thornberrys are in Uganda's Impenetrable Forest to film the rare bird the great crested grebe. While Marianne and Nigel go off to film the girl's argue over the use of the tape player. In the ensuing argument Debbie releases the commvee's brake and it takes off downhill. It finally comes to rest on a muddy river bank where it is firmly stuck. The girls will have to work together to free it, with help from some local gorillas.
11	11	"Naimina Enkiyio"	Peter Avanzino	Mark Steen	October 22, 1998	Ngorongoro Crater, Tanzania
Challenging an ancient Maasai legend, Eliza marches into a ""haunted"" forest to prove her bravery. Now, with night falling, Eliza must place her trust in the mysterious legends of the Maasai in order to find her way safely through the dark forest.
12	12	"Blood Sisters"	Peter Avanzino & Carol Millican	Tom J. Stern	October 27, 1998	Andes, Peru
The Thornberrys are driving in the Andes Mountains in Peru on the way to visit Dr. Spinoza, the world's foremost authority on vampire bats. This is a special trip for Marianne who was a student of Dr. Spinoza's twenty years ago. On the way Eliza starts reading about bats and her movie memories about vampires starts spooking her a bit. Dr. Spinoza lives in a remote, big castle and he is not at all like Marianne remembers. Everything about him gets Eliza's imagination going and Debbie sees it as a chance to have some fun at her sister's expense.
13	13	"Eliza-cology"	Cathy Malkasian	David Regal	November 5, 1998	Galapagos Islands, Ecuador
The Thornberrys are on the Galapagos Islands to film the return of the sea turtles. While off exploring with Darwin and Donnie, Eliza gives a finch an unfair advantage in getting food and in so doing disrupts the delicate food chain of the island.
14	14	"Flight of the Donnie"	Steve Ressel	John Requa & Glenn Ficarra	November 17, 1998	Peru
Eliza and Debbie must take over Marianne's duties when she is sick. Debbie goes with Nigel to shoot footage of a condor and Eliza must care for Donnie. Covered with feathers from a pillow, Donnie is snatched up by the condor and Eliza and Darwin must rescue him.
15	15	"Lost & Foundation"	Sylvia Keulen	Kate Boutilier	March 16, 1999	Padang, Sumatra, Indonesia
When the girls discover that their parents have mistakenly taken embarrassing home movies to an awards banquet, they join forces for different reasons in order to save face. Their cross-island trip turns into a race against time in order to beat their parents to the podium.
16	16	"Nigel Knows Best"	Sylvia Keulen	Kate Boutilier	March 18, 1999	Peru
Eliza and her father set off on foot to scale the Andes. Nigel assures Marianne he will be very careful and keep close tabs on Eliza. Marianne is upset because her mother sent a care package. She thinks her mother doesn't think she's a good mother. While scaling the mountain, Eliza can't stand her father's over protectiveness and wanders off on her own...right when a blizzard strikes.
17	17	"The Great Bangaboo"	Cathy Malkasian	David Regal	March 23, 1999	Sambas, Borneo, Indonesia
When Eliza discovers that a local performer claims he can talk to animals she believes she's found a soul mate. Eliza must enlist the help of some very ""urban"" animals to sneak into the sideshow and meet ""The Great Bangaboo."
18	18	"Rumble in the Jungle"	Anthony Bell & Rebecca J. Bristow	John Derevlany	March 25, 1999	Borneo, Indonesia
Eliza convinces a group of macaques to stand up to their enemies, Darwin unknowingly helps a different group with the same problem.
19	19	"The Dragon and the Professor"	Steve Ressel	Jill Gorey & Barbara Herndon	March 30, 1999	Rinca, Indonesia
Eliza will stop at nothing to get a look at the gigantic, fierce Komodo dragon that lives on the Southeast Asian islands. Her plans are halted by the unexpected arrival of her home-schooling teacher who forces her to "hit the books."
20	20	"Born to Be Wild"	Peter Avanzino & Carol Millican	Elin Hampton & David Fury Kathryn Ward (story)	April 1, 1999	Padang, Sumatra, Indonesia
The Thornberrys are in the jungle of Sumatra where Nigel is in pursuit of his lifelong dream...to see a Sumatran rhino in the wild. Eliza and Darwin set out to help him find it while Debbie and Donnie find some surfing teenagers.

Season 2 (1999–2000)

No. in series	No. in season	Title	Directed by	Written by	Original air date	Location
21	1	"Rebel Without a Trunk"	Sylvia Keulen	Kate Boutilier	August 16, 1999	Solapur, Maharashtra, India
Marianne attempts to spend time with Eliza while riding elephants to a festival, but Eliza and her mischievous elephant friend get into trouble and end up burning down their campsite as well as a run in with a local Bengal tiger. Meanwhile, the rest of the family throws a party.
22	2	"Pal Joey"	Carol Millican	Gene Grillo	August 17, 1999	Tasmania, Australia
Eliza convinces a mother kangaroo that she can handle the responsibilities of baby-sitting. She quickly learns that this mischievous joey is more than meets the eye. After a close encounter with Tasmanian devils, Eliza is all too happy to be relieved of her duty. Meanwhile, Marianne organizes a prom for Debbie at the commvee.
23	3	"Rain Dance"	Sylvia Keulen	Mady Julian & Arnold Margolin	August 18, 1999	Namib Desert, Namibia
With the commvee broken down in the desert and no water left to survive, the Thornberrys go through desperate measures to maintain their sanity. However, on the verge of dehydration, Marianne convinces her family to perform the rain ritual pictured in a nearby monolith. Everyone cheers as the rains pour down among them.
24	4	"Darwin Plays the Palace"	Sylvia Keulen	Eva Almos & Ed Scharlach	August 19, 1999	Solapur, Maharashtra, India
The Thornberrys are in India when Eliza and Darwin are seen playing together by Kip and Biederman. They capture Darwin and sell him to a rajah who is looking for a new chimp act to entertain his court. Eliza frantically searches for the missing Darwin and follows a trail of kumquats Darwin left to the rajah's palace. Entry to the palace is forbidden and she will have to rely on her wits to sneak inside and rescue Darwin.
25	5	"Stick Your Neck Out"	Cathy Malkasian	Adam Beechen	August 23, 1999	Serengeti Plain, Tanzania
Eliza finds a hero in a giraffe who can see distances with his height and warn others of approaching danger. However, to Eliza's dismay, the giraffe leaves the animals for his own needs. Only when Eliza herself is in danger does the giraffe return.
26	6	"No Laughing Matter"	Anthony Bell & Rebecca J. Bristow	David Regal	August 24, 1999	Serengeti Plain, Tanzania
Eliza frees a spotted hyena from captivity, but having never lived in the wild, it doesn't know how to survive. Eliza attempts to teach it, but it seems hopeless—until a warthog threatens them and the hyena's natural instincts take over.
27	7	"Chimp Off the Old Block"	Steve Ressel	Monica Piper	August 25, 1999	Democratic Republic of the Congo
Darwin brings Eliza to his chimpanzee compound, and Eliza, who isn't used to the structure of the chimpanzee way of life, puts Darwin in an uncomfortable situation. After a fire starts, Eliza realizes the hierarchy is necessary for jungle survival.
28	8	"Koality & Kuantity"	Anthony Bell & Rebecca J. Bristow	David Regal	August 26, 1999	Melbourne, Victoria, Australia
The Thornberrys discover that koalas are missing from their native groves. Eliza decides to unravel the mystery only to discover Kip and Biederman masterminding the evil plot. It is now up to her to stop the culprits from wiping out an entire species!
29	9	"Chew if by Sea"	Steve Ressel	Monica Piper	August 30, 1999	Sydney, New South Wales, Australia and India
When the Thornberrys leave Australia for India, Eliza can't bear to leave her wombat friend, Emily. Even though Emily was told not to, she comes along with her. Now Eliza is constantly forced to re-create Emily's habitat in order to ensure her survival.
30	10	"Clash of the Teutons"	Cathy Malkasian	Adam Beechen	August 31, 1999	Great Dividing Range, NSW/Qld/Vic., Australia
The Thornberrys meet the Fensterkopfs who make false documentaries. The Fensterkopfs' kid lies to Eliza and gets them all stuck on a cliff. After the families barely escape an avalanche, the value of truth is learned by all.
31	11	"You Ain't Seen Nothin' Yeti"	Carol Millican	Adam Beechen	September 1, 1999	Nepal
To study and protect the snow leopards from extinction and a construction site that is threatening their survival, Nigel's mentor (thought to be lost for many years) has left civilization to be a yeti. Eliza, having discovered his identity, helps him fend off the pending construction (with the unexpected assistance of an actual yeti).
32	12	"On the Right Track"	Cathy Malkasian	David Regal	September 2, 1999	Lappland, Finland
When the Thornberrys are in Finland for the annual reindeer races, Eliza feels left out. She single-handedly uncovers a plot to sabotage the races, and along with an equally excluded reindeer who didn't make the final cut, helps save the day.
33	13	"Polar Opposites"	Steve Ressel	Jill Gorey & Barbara Herndon	September 6, 1999	Greenland, Denmark
When a friendly polar bear is wrongly accused of vicious behavior, Eliza goes to great lengths to keep him from being harmed and learns the value of sticking by a friend in times of trouble. Meanwhile, Debbie gets a job at a local diner.
34	14	"Two's Company"	Steve Ressel	Monica Piper David Regal (story)	September 7, 1999	Yasuni National Park, Ecuador
When Eliza is told that "Lonesome Jake" the Galapagos tortoise (based on the real-life Lonesome George) is the last one of his kind, she can't just let his species become another name on the extinction list. Enlisting help from other animals, she soon discovers "Samantha" and brings the two tortoises together—blind date style. But she soon realizes that playing the role of Cupid is not as easy as it seems.
35	15	"Show Me the Bunny"	Becky Bristow	Adam Beechen	September 13, 1999	Lappland, Finland
After Eliza saves an Arctic hare from a determined stoat, she learns that underdogs come in all shapes and sizes.
36	16	"Reef Grief"	Sylvia Keulen	Allen Zipper	September 14, 1999	Great Barrier Reef, Queensland, Australia
Eliza gets in over her head when she assumes responsibilities she can't handle. She is soon forced to don scuba gear and rescue a fumbling Nigel and a tumbling commvee under the dangerous waters of Australia's Great Barrier Reef.
37	17	"Thornberry Island"	Becky Bristow	David Regal	September 15, 1999	Uncharted Island in the Pacific Ocean
The Thornberrys get stranded on an uncharted island, basking at first in all the beauty and the splendor, but discover soon enough that being marooned isn't all it's cracked up to be.
38	18	"Dances With Dingoes"	Peter Avanzino & Carol Millican	Kate Boutilier	September 16, 1999	Uluru, Northern Territory, Australia
Debbie discovers Eliza talking to dingoes and threatens to tell her parents. Eliza, concerned about the possibility of being shipped back to the United States as a science experiment and losing her powers, seeks help from nearby Aboriginal Australians. Together they confuse Debbie into thinking it was all a dream. *Note*: This episode's title is a parody of the 1990 movie Dances with Wolves.
39	19	"Tamper-Proof Seal"	Becky Bristow	David Regal Scott Gray (story)	October 19, 1999	Skagway, Panhandle, Alaska
When the Commvee is surrounded by angry seals, Eliza tries her own methods to get them to move. But she learns from her Inuit friend Jim that traditional ways have their value.
40	20	"You Otter Know"	Sylvia Keulen	Sheila M. Anthony	October 20, 1999	Kamchatka Peninsula, Russia
The Thornberrys are on the Russian peninsula of Kamchatka to film the Steller sea eagle. Nigel and Marianne take off to film via helicopter while Eliza and Darwin explore. They meet up with a friendly group of sea otters and start playing together when an oil tanker comes into the area. To make matters worse Kip and Biedermann rupture the tanker and start an oil spill. Eliza takes it upon herself to save the otters.
41	21	"Have Yourself A Thornberry Little Christmas"	Carol Millican	Adam Beechen Adam Beechen, Kate Boutilier & David Regal (story)	November 29, 1999	Namib Desert, Namibia
Eliza goes to desperate measures to help animals survive during tough times along the Skeleton Coast. Her good-will intentions, however, will soon cost her family their entire supply of holiday cheer—and their Christmas dinner!
42	22	"Luck Be an Aye-Aye"	Carol Millican	Adam Beechen Bob Daily (story)	February 15, 2000	Madagascar
When Donnie kidnaps an aye-aye for a pet, Eliza must return the "bad luck" omen to his home before the villagers hunt him down. Meanwhile, Nigel and Marianne search for a chameleon to film.
43	23	"The Kung and I"	Cathy Malkasian	Joan Considine Johnson	February 16, 2000	Kalahari Desert, Botswana
When the Thornberrys visit the !Kung people, everyone is shocked to discover that Debbie can click talk. No one is more surprised than Eliza, however, who is only cured of her jealousy by a !Kung healing ceremony. *Note*: The episode's title is a parody of the musical The King and I.
44	24	"Dear Diary"	Becky Bristow	Alice Miller	February 17, 2000	Cuzco, Peru
When Eliza accidentally reads Debbie's diary she learns that Debbie thinks her little sister is an embarrassment. Debbie and Eliza have it out and learn the real truth about their relationship.
45	25	"Black and White and Mom All Over"	Cathy Malkasian	Eleah Horwitz	February 21, 2000	Chongqing, China
When a seemingly abandoned panda bear imprints on Debbie, Eliza doubts Debbie's "parenting" ability—until a monsoon convinces Eliza that Debbie can handle more than she lets on.
46	26	"A Tiger by the Tail"	Mark Risley	Adam Beechen & Kate Boutilier	February 22, 2000	Ussuri River, Russia
Eliza reunites with Kalla the Siberian tigress, and is stunned when she turns on her. Eliza's visiting Grandma Sophie helps her overcome her fears just as she is overcoming her own. Betty White guest stars
47	27	"Forget Me Not"	Mark Risley	Eleah Horwitz & Kate Boutilier	February 24, 2000	Mt Kilimanjaro, Kenya
When the Thornberrys visit Nigel's best friend Jomo, they search for an elephant named Rebecca that Nigel saved 20 years earlier. As the family attends to an elephant stuck in a mudhole, Eliza bonds with Rebecca, only to learn that she is old and ready to die.
48	28	"Song for Eliza"	Carol Millican	Sarah Jane Cunningham & Suzie Villandry Sarah Jane Cunningham & David Regal (story)	February 25, 2000	Kahoolawe, Hawaii
When Eliza tries to swim with the humpback whales, Darwin accidentally knocks Debbie's boombox into the ocean, which creates a disturbing noise and causes the whales to stop their ritual singing. Eliza attempts to set things right.
49	29	"Gift of Gab"	Cathy Malkasian	Eva Almos, Ed Scharlach & David Regal	February 26, 2000	Nigeria
This is a flashback episode. It explains how Eliza and Darwin met. It also explains how Eliza got her power to talk to animals. This episode has events that has happened two years prior to the start of the series. Participating Burger Kings would give out cards for kids to mark the animal's places for each episode that aired in a leadup to the episode on 26 Feb, and a 1-800 number would appear. Kids had to dial this number and report their locations to the anonymous caller, and he/she would give out a trip around the world for the Grand Prize winner.
50	30	"Bogged Down"	Sylvia Keulen	Peter Egan	March 6, 2000	Philippines
The Thornberrys are in the Philippines to find the angler fish. While Nigel and Eliza travel the river to find it Marianne stays behind to help Debbie study for her history final. While looking for the fish, Nigel is stung by a poisonous stonefish and Eliza must go into a dark, mysterious bog to get the antitoxin before Nigel dies.
51	31	"Monkey See, Monkey Don't"	Cathy Malkasian	Emily Kapnek & David Regal Emily Kapnek (story)	March 6, 2000	Karnataka, India
When Eliza meets a group of temple monkeys, they con her into bringing all of her family's food. While Darwin tries to convince her otherwise, Eliza realizes that she's been duped and learns the value of Darwin's friendship.
52	32	"Where the Gauchos Roam"	Mark Risley	Adam Beechen	March 13, 2000	Argentina
The Thornberrys are invited on a cattle drive by Marianne's old high school friend whose son, Miguel, is not as adept at riding and roping as he claimed. In the end, Eliza helps him build confidence.
53	33	"A Shaky Foundation"	Carol Millican	David Regal	March 13, 2000	Victoria Falls
The Thornberrys are visited by the Foundation's head son, Tom, who splits up the Nigel and Marianne team. An over-zealous Tom treats Eliza like a child until he lands the Commvee in a raging river. Eliza's quick thinking prevails and she saves her family.
54	34	"Cheetahs Never Prosper"	Becky Bristow & Frank Marino	Peter Egan	March 20, 2000	Uganda
The Thornberrys are on the African plains in the middle of a drought. Eliza wants to help the animals, but her parents tell her that the animals will become more aggressive due to lack of water and food. In an effort to keep her daughter safe Marianne threatens to send Eliza home to America if she disobeys her parents. Eliza tries to help a young cheetah named Tono but she quickly becomes the target for Tono's and his mother's next meal.
55	35	"Gobi Yourself"	Sylvia Keulen	Joan Considine Johnson	March 20, 2000	Mongolia
Eliza and a Mongolian girl, Arioka, secretly switch places so Eliza can ride across the desert on camels and Arioka can ride in the Commvee. But Arioka's parents change their plans and Eliza must figure out a way to get them back to the Thornberrys.
56	36	"Every Little Bit Alps"	Cathy Malkasian	Robin Riordan David Regal & Robin Riordan (story)	March 27, 2000	Switzerland
Eliza is afraid to admit to her friend Ben that she doesn't know how to snowboard, just as a rutting ibex is afraid to stand up to another ibex.
57	37	"Pack Of Thornberrys"	Mark Risley	Kate Boutilier	March 27, 2000	Yellowstone National Park, Idaho/Montana/Wyoming
Eliza and Debbie are fighting so much, Debbie decides to apply to boarding school and Eliza encourages her. But meeting up with a lone gray wolf teaches Eliza that families, like packs, belong together.

Season 3 (2000–01)

No. in series	No. in season	Title	Directed by	Written by	Original air date	Location
58	1	"Dragon Me Along"	Sylvia Keulen	Peter Egan Gail Barrick & Peter Egan (story)	September 12, 2000	The Great Wall, China
Eliza recognizes some pandas and tries to save them from poachers.
59	2	"Time Flies"	Carol Millican	Jill Gorey & Barbara Herndon	September 19, 2000	Everglades, Monroe County, Florida
The Thornberrys are in the Florida Everglades to film the endangered snail kite. It is also Nigel's birthday and Marianne and the girls have a brand new watch/compass for him. While Marianne and Nigel go off to film the girls and Darwin and Donnie explore the Everglades in an air boat. Debbie wants to keep track of their time and brings the new watch. Soon they get lost and while using the compass drop it overboard. A Swamp Witch and a hungry alligator will make getting it back very difficult.
60	3	"Horse Sense"	Cathy Malkasian	Joan Considine Johnson Sheila M. Anthony & Joan Considine Johnson (story)	September 26, 2000	Mongolia
The Thornberrys are in Mongolia for the Naadam Festival. The festival is held outdoors and features events such as horse racing, wrestling and archery. Eliza decides she wants to enter the horse racing contest and asks Marianne to help train her. Debbie becomes involved in the archery contest and Donnie enters the wrestling contest. Eliza picks a nice, reliable horse to ride but what she really wants is to ride one of the wild horses. But they are not reliable and she gets more than she bargained for when she mounts one.
61	4	"Tyler Tucker, I Presume"	Mark Risley	Kate Boutilier	October 2, 2000	Democratic Republic Of The Congo
The Thornberry's are in the Congo along the banks of the Congo River to film the African clawless otter where they are waiting for Tyler Tucker to join them. Tyler and Eliza are cousins and close in age and very competitive with each other. When the commvee is put out of commission they take a small steamer boat named Prudence up the river in search of the otter. Tyler is not aware of all the dangers that the wild can hold and soon has them heading straight for disaster.
62	5	"Critical Masai"	Ron Noble	Peter Egan	October 3, 2000	Masai Steppe, Tanzania
While camping near a Masai village Eliza and her cousin Tyler compete to see who is the bravest. Their courage is truly put to the test when they are caught out on the Savannah during a lightning storm.
63	6	"Queen of Denial"	Frank Marino	Sarah Jane Cunningham & Suzie Villandry	October 4, 2000	Siwa Oasis, Egypt
The Thornberrys are in Egypt to film the elusive caracal cat. While Marianne and Nigel go off via camel to film, Eliza, Tyler and Darwin go exploring. While wandering through the desert they fall into an ancient burial chamber. Eliza and Tyler will have to work together to avoid the booby traps that have been set to discourage grave robbers. Meanwhile Debbie is convinced she is a descendant of Cleopatra.
64	7	"Island Trade"	Cathy Malkasian	Rick Gitelson & Joan Considine Johnson	October 5, 2000	Zanzibar, Tanzania
While on the island of Zanzibar Debbie pleads with her mom to go to Stone Town Market for some shopping. Marianne is reluctant to let her have the comvee but eventually gives in. Debbie, Eliza, Tyler and Darwin head to the market while Nigel, Marianne and Donnie go off to film in an ancient crater. Most of the shopping at the market is done by barter and they accidentally trade the comvee for a dress. The kids take off in pursuit of the merchant who is now driving their comvee to try and reach an understanding with him, but not before running the gauntlet of the local monkeys.
65	8	"Birthday Quake"	Becky Bristow & Frank Marino	Eleah Horwitz & Kate Boutilier	October 6, 2000	Mt. Kilimanjaro, Kenya
To celebrate his 13th birthday, Tyler and Eliza visit a pair of elephants in the African savanna. Tyler's parents are coming to pick him up and take him out of Africa when there is an earthquake on his birthday.
66	9	"The Legend of Ha Long Bay"	Mark Risley	Marsha Griffin	October 10, 2000	Ha Long Bay, Vietnam
Eliza encounters a mysterious creature while shooting a film with Nigel about manta rays.
67	10	"Spirited Away"	Sylvia Keulen	Sarah Jane Cunningham & Suzie Villandry	October 28, 2000	Oaxaca, Mexico
As the family prepares to film the "Day of the Dead" ceremony in a small town, Eliza meets a little girl who tells her about the spirits returning. Eliza is determined to find one, but when Donnie puts a valuable ring in a loaf of bread, Debbie and Eliza must search for the missing ring. Eliza gets some help from a mysterious woman, who she finds out, has been gone for many years.
68	11	"A Family Tradition"	Mark Risley	Alice Miller & Kate Boutilier	November 22, 2000	Ankarana Reserve, Madagascar
The Thornberrys are preparing for Thanksgiving in Madagascar when Grandma Sophie calls, inviting them home for the holiday. When Nigel and Marianne explain that they can't go home until they get footage of a fossa for The Foundation. Eliza and Debbie choose to go back to the United States with out their parents but before they board the plane they reconsider in order to spend the holiday as a family.
69	12	"Happy Old Year"	Becky Bristow & Frank Marino	Kate Boutilier	December 27, 2000	Quito, Ecuador
Debbie accidentally hurts her father's feelings, and joins a couple of eccentric, 1930s-era volcano chasers, Mitzi and Merrick Dash. Eliza goes after her to reclaim her friend, Santusa the llama.
70	13	"Happy Campers"	Sylvia Keulen	David Rosenberg	December 30, 2000	Bhutan
A trip to Bhutan, finds Marianne and Debbie out in the cold, and Eliza and Darwin on the run from the border police.
71	14	"All Work and No Play"	Carol Millican	Peter Hunziker	January 12, 2001	Lake Baikal, Siberia, Russia
The Thornberrys are in Siberia along the banks of a river which feeds into Lake Baikal. Nigel and Marianne are there to film the Russian lynx while the girls are forced to stay at the campsite and take inventory of their provisions. This really annoys Debbie who wants to go to the town of Bolshoi Goti and pick up a CD of her favorite Russian Band The Slovniks. Debbie and Eliza both shirk their responsibilities...Debbie and Donnie take off via raft to Bolshoi Goti and Eliza and Darwin tour a nearby beaver dam. Everyone gets in trouble with an unexpected storm erupts .
72	15	"New Territory"	Carol Millican	Joan Considine Johnson	January 12, 2001	Kakadu National Park, Northern Territory, Australia
The Thornberrys meet an Australian family named the Gibsons when the Comvee runs out of gas. Eliza makes friends with the youngest member of the family named Bethany, who is in a wheelchair from cerebral palsy. The girls go land sailing and Bethany helps Eliza escape from a crocodile, but then get in an argument when Bethany thinks Eliza is feeling sorry for her being disabled. Will the two new friends find a way to make up? Meanwhile, Nigel and Marianne play the Gibsons in a very competitive game of Tricky Trivia.
73	16	"Operation Valentine"	Mark Risley	Alice Miller	February 14, 2001	Alice Springs, Northern Territory, Australia
The Thornberrys are broken down, The Mail plane drops of the Thornberrys current batch of mail. Debbie tries to bake cookies, which turn out badly. They try to escape from an angry eagle by climbing up a small mountain. Eliza slips and nearly falls. Darwin pulls her up on top of the small mountain. Nigel was on an explore of his own and comes across Donnie. . Nigel picks up Eliza in his arms and carries her back to camp. Marianne upon seeing Eliza's symptoms quickly looks them up in a medical book. They need to get Eliza to the hospital ASAP because it is her appendix. They try taking the mini-com but it gets a flat and they are unable to put the spare on it because the spare is already being used
74	17	"Hello, Dolphin!"	Frank Marino	Peter Egan	February 19, 2001	Shark Bay, Western Australia, Australia
Nigel and Marianne are on a dangerous assignment to film some tiger sharks while Eliza goes swimming with some dolphins. Meanwhile, Debbie gets dumped by her e-mail boyfriend Sven. When the kids take a boat out with the dolphins to swim in the deep sea, they may get some unexpected visitors.
75	18	"April Fool's Day"	Carol Millican	Joan Considine Johnson	April 1, 2001	Okavango Delta, Botswana
It's April Fools' Day, and The Thornberrys are trying to outdo each other by way of April Fool's jokes. At first it's a lot of fun, but when Tyler and Eliza encounter some quicksand and a lion, will they learn not to cry wolf.
76	19	"Gem of a Mom"	Ron Noble	Sarah Jane Cunningham & Suzie Villandry	May 10, 2001	Karakoram, Pakistan
The Thornberrys are in Pakistan when Eliza and Debbie realize they have forgotten it is Mothers Day. The girls search through the market place to find the perfect gift for their mother. They come upon a stand that is selling jewels that they cannot afford so after a rock slide closes the road they are traveling on, Debbie and Eliza plan to find their own gem stones in the mountains. While they search for the perfect Mothers day gift they continuously ignore Marianne's attempts to spend time with her daughters.
77	20	"The Anniversary"	Cathy Malkasian	Earl Hamner & Don Sipes	May 14, 2001	Mount Fuji, Japan
The Thornberrys are in Japan near Mount Fuji to film the Asian black bear when Marianne's parents visit to spend their 50th anniversary with them. Grandpa Frank has had health problems recently and has problems acting his age. Eliza, Darwin and Grandpa Frank go off to climb Mount Fuji.

Season 4 (2001–02)

No. in series	No. in season	Title	Directed by	Written by	Original air date	Location
78	1	"The Origin of Donnie (Part 1)"	Carol Millican	Joan Considine Johnson (story) Sheila M. Anthony (teleplay)	August 18, 2001	Borneo, Indonesia
The Thornberrys are preparing for Donnie's "birthday" party in Borneo when one crisis after another happens. Grandma Sophie decides to visit the same day Nigel and Marianne must capture a wild orangutan on film for the foundation
79	2	"The Origin of Donnie (Part 2)"	Joseph Scott	Joan Considine Johnson	August 18, 2001	Borneo, Indonesia
Donnie searches the jungles of Borneo for his ancestry, causing Eliza to worry that he will break ties with the Thornberry clan.
80	3	"The Origin of Donnie (Part 3)"	Dean Criswell	Joan Considine Johnson	August 18, 2001	Borneo, Indonesia
A fire breaks out in the forest and Donnie is blamed; can Eliza convince it wasn't Donnie and get the animals to safety? Meanwhile, Marianne and Nigel find shelter in a cave nearby, only to get lost inside, and Debbie and Sophie help the village put out the fire, while learning about Donnie's real parents.
81	4	"The Origin of Donnie (Part 4)"	Ron Noble	Joan Considine Johnson	August 18, 2001	Borneo, Indonesia
The rest of the fire is put out by rain, the others are reunited and Donnie is found. The family believe he is going back to his parents, but they soon realize the truth.
82	5	"The Trouble With Darwin"	Sylvia Keulen	David Regal (story) Jill Gorey & Barbara Herndon (teleplay)	October 31, 2001	Tanzania
The Thornberrys are in Tanzania, Africa to film the grand opening of Dr. Jane Goodall's chimpanzee sanctuary. Eliza can't wait to meet her idol Dr. Goodall. When they arrive Debbie is put to work caring for baby chimps in the nursery while Eliza and Dr. Goodall have an awkward first meeting. She is not impressed with Darwin and the fact that he is domesticated. Eliza's feelings are hurt and she runs off into the jungle with Darwin following. Trouble ensues when they run into poachers who have been working nearby. Jane Goodall guest stars herself.
83	6	"Hot Air"	Ron Noble	Sarah Jane Cunningham & Suzie Villandry	June 1, 2002	Rotorua, New Zealand
The Thornberrys visit a Māori Iwi holding a Hui. As Debbie flirts with a young Maori, Eliza and Darwin have a fight. When Darwin leaves and Eliza befriends a possum named Penelope who gets her trapped in a hot air balloon, Darwin must come to the aid of Eliza.

Note: The events of The Wild Thornberrys Movie and Rugrats Go Wild occur between seasons 4 and 5.

Season 5 (2003–04)

No. in series	No. in season	Title	Directed by	Written by	Original air date	Location
84	1	"The Wild Snob-Berry"	Dean Criswell	Peter Egan	February 3, 2003	Denali National Park, Interior, Alaska
At the request of the foundation, teenage rocker Shane G. joins the Thornberrys during their stay in Alaska. Since Eliza and Debbie both have a crush on Shane, they both go exploring with Shane only to discover how thick-headed he really is. Note: This is the first episode to take place after the events of the movie, therefore Debbie knows about Eliza's power at this point.
85	2	"Ice Follies"	Ron Noble	David Rosenberg	February 4, 2003	Glacier Bay National Park, Panhandle, Alaska
Shane and Eliza are saved by Debbie after their canoe capsizes.
86	3	"Fool's Gold"	Michael Dædalus Kenny	Kathryn McCullough	February 5, 2003	Yukon-Charley Rivers National Park, Interior Alaska
Eliza and Shane plan to go see an old gold mine full of fool's gold, but Eliza gets jealous when Shane invites Debbie along to help with her art project.
87	4	"Clash and Learn"	Anthony Bell	Sheila M. Anthony & Peter Hunziker (story) Peter Egan (teleplay)	February 6, 2003	Bethel, Interior, Alaska
Eliza's friend Kit becomes better friends with Shane.
88	5	"Sir Nigel (Part 1)"	Max Martinez	Sheila M. Anthony	March 30, 2003	Cairngorm, Scotland, United Kingdom
The Thornberrys pay a visit to Nigel's parents in Scotland at Thornberry Hall right before Nigel is to be made a knight by the Queen of England. Once there, Nigel's mother, Cordelia, presses him to accept a tenured professorship at Oxford. The prospect of the family settling down upsets Eliza but thrills Debbie. Meanwhile, Eliza rushes to save some golden eagles from eating poisoned meat from a trapper.
89	6	"Sir Nigel (Part 2)"	Ron Noble	Sheila M. Anthony	March 30, 2003	Cairngorm, Scotland, United Kingdom
Eliza rescues her golden eagle friend from the trapper and the Thornberry clan rushes to London for Nigel's knighting ceremony. After being knighted, the newly christened Sir Nigel chooses to continue his show over teaching at Oxford much to the annoyance of Debbie and Cordelia. Note: This is the episode that leads to the events of The Wild Thornberrys Movie
90	7	"Look Who's Squawking"	Ron Noble	David Rosenberg	April 4, 2003	McMurdo Station, Ross Dependency (New Zealand), Antarctica
Filming penguins in Antarctica, Eliza begins practicing for her future profession as a vet, when she comes across a wounded penguin. She rescues her, but may have made matters worse by separating the penguin from her mate and her egg. When she borrows a snow speeder to get back to the penguin breeding grounds she needs to make things right again.
91	8	"Eliza Unplugged"	Joseph Scott	Sheila M. Anthony (story) David Rosenberg (teleplay)	June 11, 2004	Behm Canal, Panhandle, Alaska
Shane is ready to leave the Thornberrys to go back to his life as a pop star and Eliza has to be fast to tell Shane her true feelings for him before it's too late. But when Shane and Eliza have a little fight and Shane runs away Eliza must find him to make up and tell him her true feelings. Meanwhile, Marianne fears the girls are getting older and she's losing them. When Shane's plane arrives Shane says goodbye to each Thornberry and shares a kiss with Eliza. Eliza watches his plane take off and disappear from view. Series Finale

Films

• The Wild Thornberrys Movie (2002)
• Rugrats Go Wild (2003)