Amphibians and reptiles of Oregon
- 1 Amphibians
- 1.1 Tiger Salamander
- 1.2 Northwestern Salamander
- 1.3 Long-toed Salamander
- 1.4 Cope's Giant Salamander
- 1.5 Pacific Giant Salamander
- 1.6 Columbia Torrent Salamander
- 1.7 Southern Torrent Salamander
- 1.8 Cascade Torrent Salamander
- 1.9 Rough-skinned newt
- 1.10 Dunn's Salamander
- 1.11 Larch Mountain Salamander
- 1.12 Western Red-backed Salamander
- 1.13 Del Norte Salamander
- 1.14 Siskiyou Mountains Salamander
- 1.15 Ensatina
- 1.16 Clouded Salamander
- 1.17 Black Salamander
- 1.18 Oregon Slender Salamander
- 1.19 California Slender Salamander
- 1.20 Tailed Frog
- 1.21 Pacific Tree Frog
- 1.22 Great Basin Spadefoot Toad
- 1.23 Western Toad
- 1.24 Woodhouse's Toad
- 1.25 American Bullfrog
- 1.26 Columbia Spotted Frog
- 1.27 Northern Leopard Frog
- 1.28 Red-legged Frog
- 1.29 Spotted Frog
- 1.30 Cascades Frog
- 1.31 Foothill Yellow-legged Frog
- 2 Reptiles
- 2.1 Painted Turtle
- 2.2 Western Pond Turtle
- 2.3 Northern Alligator Lizard
- 2.4 Southern Alligator Lizard
- 2.5 Mojave Black-collared Lizard
- 2.6 Long-nosed Leopard Lizard
- 2.7 Short-horned Lizard
- 2.8 Desert Horned Lizard
- 2.9 Common Sagebrush Lizard
- 2.10 Western Skink
- 2.11 Western Fence Lizard
- 2.12 Side-blotched Lizard
- 2.13 Western Whiptail
- 2.14 Plateau Striped Whiptail
- 2.15 Rubber Boa
- 2.16 Racer
- 2.17 Sharptail Snake
- 2.18 Ringneck Snake
- 2.19 Night Snake
- 2.20 Common Kingsnake
- 2.21 California Mountain Kingsnake
- 2.22 Striped Whipsnake
- 2.23 Pacific Gopher Snake
- 2.24 Western Ground Snake
- 2.25 Santa Cruz Garter Snake
- 2.26 Western Terrestrial Garter Snake
- 2.27 Northwestern Garter Snake
- 2.28 Common Garter Snake
- 2.29 Western Rattlesnake
- 3 See also
- 4 Further reading
- 5 Notes
The Tiger Salamander (Ambystoma tigrinum) is a species of Mole Salamander. Tiger salamanders are large, with a typical length of 6–8 inches. They can reach up to 14 inches in length, particularly neotenic individuals. Adults are usually blotchy with grey, green, or black, and have large, lidded eyes. They have short snouts, thick necks, sturdy legs, and long tails. Their diet consists largely of small insects and worms, though it is not rare for an adult to consume small frogs and baby mice.
The Northwestern Salamander (Ambystoma gracile) inhabits the northwest Pacific coast of North America. These fairly large salamanders grow to 8.7 in (220 mm) in length. It is found from southeastern Alaska on May Island, through Washington and Oregon south to the mouth of the Gulala River, Sonoma County, California. It occurs from sea level to timberline, but not east of the Cascade Divide. Its range includes Vancouver Island in British Columbia and Cypress, Whidbey, Bainbridge, and Vashon Islands in Washington (Snyder 1963).
The Long-toed Salamander (Ambystoma macrodactylum, Baird 1849) is a mole salamander in the family Ambystomatidae. This species, typically 4.1–8.9 cm (1 3/5–3½ in) long when mature, is characterized by its mottled black, brown and yellow pigmentation, and its long outer fourth toe on the hind limbs. Analysis of fossil records, genetics, and biogeography suggest that A. macrodactylum and A. laterale are descended from a common ancestor that gained access to the western Cordillera with the loss of the mid-continental seaway toward the Paleocene. The distribution of the long-toed salamander is primarily in the Pacific Northwest, with an altitudinal range of up to 2,800 metres (9,200 ft). It lives in a variety of habitats including temperate rainforests, coniferous forests, montane riparian zones, sagebrush plains, red fir forests, semi-arid sagebrush, cheatgrass plains, and alpine meadows along the rocky shores of mountain lakes. It lives in slow-moving streams, ponds and lakes during its aquatic breeding phase. The long-toed salamander hibernates during the cold winter months, surviving on protein energy reserves stored in the skin and tail.
Cope's Giant Salamander
The Cope's Giant Salamander (Dicamptodon copei) is a species of salamander in the Dicamptodontidae family. It reaches between 12.4–19.1 cm (4⅞ – 7½ in). The salamander resembles Pacific Giant Salamander larvae, but it never transforms to a terrestrial stage. It is smaller overall with a narrower head and shorter limbs. It is brown above with patches of yellowish-tan covering clusters of white skin glands, its belly is dark bluish-gray. The salamander has 12–13 inconspicuous costal grooves. There are three closely related species to this taxon: D. ensatus, (California Giant Salamander), D. aterrimus (Idaho Giant Salamander) and D. tenebrosus (Coastal Giant Salamander). D. copei is endemic to the Pacific Northwestern portion of the United States. It is found on the Olympic Peninsula, Washington. Its natural habitat is temperate forests, rivers, freshwater lakes, and freshwater marshes.
Pacific Giant Salamander
The Coastal Giant Salamander (Dicamptodon tenebrosus) is a species of salamander in the Dicamptodontidae family (Pacific giant salamanders). It is endemic to the United States and Canada. There are three closely related species to this taxon: D. ensatus (California Giant Salamander), D. copei (Cope's Giant Salamander), and D. aterrimus (Idaho Giant Salamander). Its natural habitats are temperate forests, rivers, freshwater lakes, and freshwater marshes. The Coastal Giant Salamander is endemic to the Pacific Northwest, found in Northern California, Oregon, Washington, and southern British Columbia.
Columbia Torrent Salamander
The Columbia Torrent Salamander (Rhyacotriton kezeri) is a species of salamander in the Rhyacotritonidae family. It is endemic to the United States. Its natural habitats are temperate forests, rivers, and freshwater springs. It is a small salamander (up to 10 cm total length) that lives in clear, cold mountain streams.
Southern Torrent Salamander
The Southern Torrent Salamander (Rhyacotriton variegatus) is a member of the Rhyacotriton family of salamanders. R. variegatus has the common name Southern Torrent Salamander for it is the species of Torrent Salamander found the furthest south in the region. It is a small salamander endemic to the Pacific Northwest from Northern California to Northern Oregon. They are one of four species of Rhyacotriton, along with R. cascadae, R. kezeri and R. olympicus. All species of Rhyacotriton are small with their body length being less than 5 inches. The Rhyacotriton family is found in the Pacific Northwest, extending from Northern California to the Washington Peninsula. R. variegatus is endemic to the southernmost part of the range, extending from California to Oregon. Populations of R. variegatus are found in forests of the coastal regions of the states. There are some Rhyacotriton that are found more inland, but they are still relatively close to the coast; these are mainly populations of the R. kezeri species. The areas that have populations of R. variegatus are going to be forests with fresh water sources that meet all of the requirements for habitation. Although most of the population is in one continuous range, there is a smaller population separated from the main range in Southwest Oregon. Even though it is disconnected from the range, it is still close in relation to the coastline.
Cascade Torrent Salamander
The Cascade Torrent Salamander (Rhyacotriton cascadae) is a species of salamander in the Rhyacotritonidae family. It is endemic to the United States. Its natural habitats are temperate forests, rivers, and freshwater springs.
The Rough-skinned newt (Taricha granulosa) is a newt known for its strong poison. Habitats of rough-skinned newts are found throughout the West Coast of the United States and British Columbia. Their range extends south to Santa Cruz, California and north to Alaska.
The Dunn's Salamander (Plethodon dunni) is a species of salamander in the Plethodontidae family. It is endemic to the United States. Its natural habitats are temperate forests, freshwater springs, and rocky areas. It has no larval stage. Its diet consists mainly of small invertebrates.
Larch Mountain Salamander
The Larch Mountain Salamander (Plethodon larselli) is a species of salamander in the Plethodontidae family. It is endemic to the United States. The Larch Mountain salamander occurs in the Cascade Mountains of southern Washington and northern Oregon. In Washington, it occurs from the Columbia River Gorge to just north of Snoqualmie Pass. Its natural habitats are temperate forests and rocky areas.
Western Red-backed Salamander
The Western Redback Salamander (Plethodon vehiculum) is a species of salamander in the Plethodontidae family. Its natural habitats are temperate forests and rocky areas. Colored stripe on back changes from red to yellow.
Del Norte Salamander
The Del Norte Salamander (Plethodon elongatus) is a species of salamander in the Plethodontidae family. It is endemic to the United States. Adults are 2 3/8 - 3 inches long (6 - 7.6 cm) from snout to vent, and 4 1/3 - 6 inches (11 – 15 cm) in total length. Its natural habitats are temperate forests and rocky areas.
Siskiyou Mountains Salamander
The Siskiyou Mountains salamander, (Plethodon stormi), also called the Siskiyou Mountain salamander, exists only in isolated locations along the Klamath River in northern California and southern Oregon. It is a close relative of the Del Norte Salamander, and some herpetologists believe it may be a subspecies of that animal.
Ensatina eschscholtzii (commonly known by its genus name, Ensatina) is a complex of plethodontid (lungless) salamanders. found in coniferous forests, oak woodland and chaparral from British Columbia, through Washington, Oregon, across California (where all seven subspecies variations are located), all the way down to Baja California in Mexico.
The Clouded salamander (Aneides ferreus) is a species of salamander in the Plethodontidae family. It is endemic to the United States. Its natural habitat is temperate forests and it is probable that many nest in trees.
The Black Salamander (Aneides flavipunctatus) is a species of salamander in the Plethodontidae family. It is endemic to the United States. Its natural habitats are temperate forests and temperate grassland.
Oregon Slender Salamander
The Oregon Slender Salamander, (Batrachoseps wrightorum), is a species of salamander in the Plethodontidae family. The Oregon Slender Salamander is endemic to the Northwestern United States. Its natural habitat is temperate forests of moist Douglas fir, maple, and red cedar woodlands in Oregon, to 3,000 feet (910 m).
California Slender Salamander
The California Slender Salamander (Batrachoseps attenuatus) is a lungless salamander that is found primarily in coastal mountain areas of Northern California, United States as well as in a limited part of the western foothills of the Sierra Nevada, California, in patches of the northern Central Valley of California, and in extreme southwestern Oregon. What makes this amphibian notable is that this species resides primarily in a limited range within California as one of a handful quasi-endemic amphibians in the state.
The Tailed frogs (Ascaphus truei) are two species of frogs. The species are part of the genus, Ascaphus is the only taxon in the family Ascaphidae //. The "tail" in the name is actually an extension of the male cloaca. The tail is one of two distinctive anatomical features adapting the species to life in fast-flowing streams. It is the only North American frog that reproduces by internal fertilization. Until 2001, the genus was believed to be monotypic, the single species being the tailed frog (Ascaphus truei Stejneger, 1899). However in that year Nielson, Lohman, and Sullivan published evidence in Evolution that promoted the Rocky Mountain tailed frog (Ascaphus montanus) from a subspecies to its own species. Since then, the former species has been formally called coastal tailed frog.
Pacific Tree Frog
The Pacific Tree Frog (Pseudacris regilla) is a very common species of chorus frog, with a range from the West Coast of the United States (from North California, Oregon, and Washington) to British Columbia in Canada. Living anywhere from sea level up to over 10,000 feet, they are found in shades of greens or browns and even have been known to change between them. They live in many types of habitats and reproduce in aquatic settings. This species is also known as the Pacific Chorus Frog.
Great Basin Spadefoot Toad
The Great Basin Spadefoot (Spea intermontana) is a species of toad in the Scaphiopodidae family. The natural habitats of the Great Basin Spadefoot include pinyon-juniper, ponderosa pine, and high elevation spruce-fir forests, semidesert shrubland, sagebrush flats, temperate grasslands, and deserts. They are present in agricultural areas as well. The Great Basin Spadefoot can be found from southern British Columbia through the eastern portions of Washington and Oregon and in southern Idaho. Their range extends throughout all of Nevada and into most of Utah; they are also present in small areas in California, Arizona, Colorado, and Wyoming.
The Western toad or boreal toad (Bufo boreas) is a large toad species, between 5.6 and 13 cm long, of western North America. It has a white or cream dorsal stripe, and is dusky gray or greenish dorsally with skin glands concentrated within the dark blotches.
The Woodhouse's Toad, (Bufo woodhousii) is a medium-sized (4 inches or 10 centimetres) true toad, which is native to the United States and Mexico. There are two recognized subspecies. The epithet woodhousii is in honor of the American physician and naturalist Samuel Washington Woodhouse. B. woodhousii tends to hybridize with Bufo americanus in their overlapping ranges.
The American bullfrog (Rana catesbeiana), often simply known as the bullfrog in Canada and the United States, is an aquatic frog, a member of the family Ranidae, or “true frogs”, native to much of North America. This is a frog of larger, permanent water bodies, swamps, ponds, and lakes, where it is usually found along the water's edge. On rainy nights, bullfrogs, along with many other amphibians, travel overland, and may be seen in numbers on country roads.
Columbia Spotted Frog
The Columbia Spotted Frog (Rana luteiventris) is a North American species of frog. It is a medium sized frog reaching lengths of up to three and a half inches (90 cm). Its color ranges from a dark, olive green to light brown with irregularly-shaped black spots on its back and legs (rendering its name). The belly and upper lip are white in color. Individuals can be distinguished from other Rana species by their shorter back legs, narrow snout and upturned eyes. Since they spend most of their time in the water, they also have more webbing in their hind feet than similar species.
Northern Leopard Frog
The Northern Leopard Frog (Rana pipiens)) is a species of Leopard frog from the true frog family native to parts of Canada and United States. The Northern Leopard Frog is a fairly large species of frog reaching about 11 centimeters (4.3 in) in length. It varies from green to brown in dorsal colour with large dark circular spots on its back, sides and legs. Northern Leopard Frogs have a wide range of habitats. They are found in permanent ponds, swamps, marshes and slow moving streams throughout forest, open and urban areas. They normally inhabit water bodies with abundant aquatic vegetation. They are well adapted to cold and can be found above 3,000 meters (9,800 ft) asl.
The Northern Red-legged Frog (Rana aurora) is a species of amphibian, whose range is the coastal region stretching from southwest British Columbia to Northern California, and is protected in British Columbia, Oregon and California. As a member of the genus Rana, this species is considered a true frog, with characteristic smooth skin and a narrow waist. This frog requires still waters for breeding, and is rarely found at any great distance from its breeding ponds or marshes.
The Oregon Spotted Frog (Rana pretiosa) (meaning "precious frog") is a member of the true frogs from the family Ranidae. Oregon Spotted Frogs are found in British Columbia, Washington State and Oregon. They were previously found but have been extirpated in California. In Oregon, the Oregon spotted frog's current range is Deschutes, Lane and Klamath counties. 
The Cascades Frog (Rana cascadae) is a species of frog in the Ranidae family. It is found in western United States and possibly Canada, mainly in the Cascade Range and Olympic Mountains. The Cascade frog was first discovered in the Cascade Mountains in the California regions. It can be found throughout the Cascade Mountains ranging from Washington through Oregon, and California. They concentrate heavily around the volcanic area of the peaks. Its natural habitats are temperate forests, temperate grassland, rivers, swamps, freshwater lakes, intermittent freshwater lakes, freshwater marshes generally between 665 m (2,180 ft) and 2,450 m (8,040 ft) elevation. The range may extend lower in Washington.
Foothill Yellow-legged Frog
The Foothill Yellow-legged Frog (Rana boylii) is a small-sized (3.72-8.2 cm) frog from the Rana genus in the Ranidae family. This species can be found from northern Oregon, down California’s west coast, and into Baja California, Mexico. Both the Columbia Spotted Frog and the Cascades Frog, also part of the Rana genus, live in the northern regions of this frog's territory.
The painted turtle (Chrysemys picta) is the most widespread native turtle of North America. It lives in slow-moving fresh waters, from southern Canada to Louisiana and northern Mexico, and from the Atlantic to the Pacific. The turtle is the only species of the genus Chrysemys, which is part of the pond turtle family Emydidae.
Western Pond Turtle
The Western Pond Turtle (Actinemys marmorata or Emys marmorata), or Pacific pond turtle is a small to medium-sized turtle growing to approximately 20 cm (8 in) in carapace length. It is limited to the west coast of the United States of America and Mexico, ranging from western Washington state to northern Baja California.
Northern Alligator Lizard
The Northern Alligator Lizard (Elgaria coerulea) is a medium-sized lizard that occurs on the North American west coast. Northern Alligator Lizards are medium-sized slender lizards. Adults reach a snout-to-vent length of about 10 cm (4 inches) and a total length of roughly 25 cm (10 in). They have a distinct skin fold on their sides, separating the keeled scales on the back from the smooth ventral scales. They are brownish in color and often have dark blotches that sometimes blend together into bands. The belly is light gray. The eyes are dark. The Northern Alligator Lizard occurs along the Pacific Coast and in the Rocky Mountains from southern British Columbia through Washington, northern Idaho and western Montana south through Oregon to the coastal range and the Sierra Nevada in central California.
Southern Alligator Lizard
The Southern Alligator Lizard (Elgaria multicarinata) is a lizard native to the Pacific coast of North America. It is common throughout Southern California and can be found in grasslands, chaparral, and forests as well as urban areas. In dry climates, it is likely to be found in moist areas or near streams. Three subspecies can be distinguished: the California alligator lizard (E. m. multicarinata), the San Diego alligator lizard (E. m. webbii), and the Oregon alligator lizard (E. m. scincicauda). (Stebbins, 2003)
Mojave Black-collared Lizard
The Great Basin collared lizard, (Crotaphytus bicinctores) is a species of lizard known also as the Mohave Black Collared Lizard. It is very similar to the Common Collared Lizard, Crotaphytus collaris, in shape and size, but it lacks the bright extravagant colors. Males can be brown to orange and some red or pink on the belly. Females are more black or dark brown. C. bicintores have elongated scales near the nails and their tail is more triangular in shape than round as with C. collaris. Crotaphytus bicinctores utilizes external energy for their body heat.
Long-nosed Leopard Lizard
The Long-nosed leopard Lizard, Gambelia wislizenii, is a relatively large lizard ranging from 3 1/4-5 3/4 inches (8.2-14.6 cm). It has a large head, long nose, and a long round tail that can be longer than its body. It is closely related to the "Blunt-nosed Leopard Lizard" which closely resembles the Long-nosed Leopard lizard in body proportions, but has a conspicuously blunt snout. They were once considered part of the genus Crotaphytus. The epithet wislizenii is in honor of the German-American surgeon and naturalist Frederick Adolph Wislizenius, who caught the first specimen near Santa Fe, New Mexico.
The Pigmy short-horned lizard (Phrynosoma douglassii) is a small lizard that occurs in North America. Like other horned lizards, it is often wrongly called the "Horned Toad" or "Horny Toad," but it is not a toad at all. It is a reptile, not an amphibian.
Desert Horned Lizard
The Desert horned lizard (Phrynosoma platyrhinos) is a species of phrynosomatid lizard native to western North America. They are often referred to as "horny toads", although they are not toads, but lizards. They typically range from southern Idaho in the north to northern Mexico in the south. There are considered to be two subspecies: the northern desert horned lizard (Phrynosoma platyrhinos platyrhinos) ranging in Idaho, Wyoming, Utah, Nevada, the Colorado front range, and parts of southeastern Oregon; and the southern desert horned lizard (Phrynosoma platyrhinos calidiarum) ranging in southern Utah and Nevada to southeast California, western Arizona, and northern Baja California.
Common Sagebrush Lizard
The Sagebrush Lizard (Sceloporus graciosus graciosus) is a common lizard found in mid to high latitudes in the Western United States of America. It belongs to the genus Sceloporus (spiny lizards) in the Phrynosomatidae family of reptiles. Named after the sagebrush plants near which it is commonly found, the sagebrush lizard has keeled and spiny scales running along its dorsal surface.
The Western Skink (Plestiodon skiltonianus) is a small, smooth-scaled lizard with relatively small limbs, measuring about 100 to 200 mm long. Western skinks are very adaptable. They spend much of their day basking in the sun. Their diet ranges widely, including spiders and beetles. Western Skinks will bite if grasped and will flee if they feel threatened. It is a common but secretive species whose range extends throughout Washington, Oregon, Nevada, Utah, and Wyoming and into western Montana and northern Arizona. It is widespread in northern California but restricted to the coast in central and southern California. Found in a variety of habitats, this lizard is most common in early successional stages or open areas of late successional stages. Heavy brush and densely forested areas are generally avoided. Western skinks are found from sea level to at least 2,130 m (7,000 ft). This diurnal reptile is active during the warm seasons.
Western Fence Lizard
The Western Fence Lizard (Sceloporus occidentalis) is a common lizard of California and the surrounding area. Because the ventral abdomen of an adult is characteristically blue, it is also known as the blue-belly. Immature western fence lizards have aquamarine-colored bellies. It is a member of the genus Sceloporus, and therefore is a spiny lizard. Although California is the heart of the range of this lizard, it is also found in eastern and southwest Oregon, as well as in the Columbia River Gorge, southwest Idaho, Nevada, western Utah, and northwestern Baja California, and some of the islands off the coast of both California and Baja California. The western fence lizard occupies a variety of habitats. It is found in grassland, broken chaparral, sagebrush, woodland, coniferous forest, and farmland, and occupies elevations from sea level to 10,800 ft. They generally avoid the harsh desert.
The Common Side-blotched Lizard (Uta stansburiana) is a species of side-blotched lizard common on the Pacific coast of North America, from Washington to western Texas and NW Mexico. It has a peculiar evolutionary strategy following the pattern of the game of Rock, Paper, Scissors, with three types of males existing, each of which applies a different technique to acquire mates (Sinervo & Lively, 1996; Sinervo, 2001; Alonzo & Sinervo, 2001; Sinervo & Clobert, 2001; Sinervo & Zamudio, 2001). The specific epithet, stansburiana, is in honor of Captain Howard Stansbury of the United States Corps of Topographical Engineers, who collected the first specimens while leading the 1849-1851 expedition to explore and survey the Great Salt Lake of Utah.
The Western Whiptail (Aspidoscelis tigris (Baird and Girard, 1852)) is a small lizard (adults average 25 to 35 cm - about a foot - in length) that ranges throughout most of the southwestern United States. Most of its populations appear stable, and is not listed as endangered in any of the states comprising its range. It lives in a wide variety of habitats, including deserts and semiarid shrublands, usually in areas with sparse vegetation; also woodland, open dry forest, and riparian growth. It lives in burrows. Major differences between this species and the Checkered Whiptail (Aspidoscelis tesselata) include the lack of enlarged scales anterior to the gular fold and the presence of enlarged antebatrachial scales. It was previously known under Cnemidophorus tigris, until phylogenetic analyses concluded that the genus Cnemidophorus was polyphyletic. Since it does not migrate, a number of forms have developed in different regions, several of which have been given sub-specific names - for example the California Whiptail, Aspidoscelis tigris munda.
Plateau Striped Whiptail
The Rubber Boa (Charina bottae) is a snake in the family Boidae and genus Charina. The Boidae family consists of the non-venomous snakes commonly called boas and consists of 43 species. The genus Charina consists of four species, three of which are found in North America, and one species found in Africa.
The Racer (Coluber constrictor) is a species of non-venomous, colubrid snake. They are primarily found throughout the United States, east of the Rocky Mountains, but they range north into Canada, and south into Mexico, Guatemala and Belize. Racers typically grow to around 3½ foot (107 cm) long, but some subspecies are capable of attaining lengths of 6 feet (1.8 m). Their patterns vary widely between subspecies. Most are solid colored as their common names imply, black racers, brown racers, blue racers or green racers. Runner is sometimes used instead of racer in their common name.
The Sharp-tailed Snake or sharptail snake (Contia tenuis) is a small, locally common colubrid snake that lives in the western United States. It is distributed through the states of California, Oregon, and Washington, as well as British Columbia, Canada.
The Ringneck Snake or ring-necked snake (Diadophis punctatus) is a colubrid snake species. It is found throughout much of the United States, central Mexico, and south eastern Canada. Ring-necked snakes are secretive, nocturnal snakes that are rarely seen during the day time. They are slightly venomous but their non-aggressive nature and small rear-facing fangs pose little threat to humans who wish to handle them. They are best known for their unique defense posture of curling up their tails exposing their bright red-orange posterior, ventral surface when threatened. Ring-necked snakes are believed to be fairly abundant throughout most of their range though no scientific evaluation supports this theory.
The Night Snake (Hypsiglena torquata) is a species of rear-fanged, colubrid snake. They are found through the south and western United States, as well as Mexico. The number of subspecies varies depending on the source, but it is generally accepted that there are 17. The night snake has been found as far north as southern British Columbia, and as far south as Guerrero, Mexico. The Eastern range of the night snake extends to Texas. Still, not much is known as far as population densities and exact range due to the highly cryptic nature of the night snake.
California Mountain Kingsnake
The California Mountain Kingsnake, (Lampropeltis zonata) or is a species of nonvenomous colubrid snake. It is a coral snake mimic, having a similar pattern consisting of red, black and yellow on its body, but the snake is completely harmless. As its name suggests, the California mountain kingsnake, is found mostly in the mountains of its region. The California Mountain Kingsnake is endemic to western North America, in the Western United States and Northwest Mexico. It ranges from extreme southern Washington state, where it has a disjunct population, through Oregon and California, to northern Baja California. The majority of its range lies within the state of California, which is the reason for its common name.
The Striped Whipsnake (Masticophis taeniatus) is a species of nonvenomous colubrid snake that is closely related to the California Whipsnake (Masticophis lateralis). It is native to the western United States and northern Mexico. The Striped Whipsnake is found all throughout the western United States and northern Mexico. The farthest north part of their range is in south central Washington and moves south into the great basin between the Cascade-Sierran crest and the continental divide. The range then continues southeast across the continental divide into New Mexico and western and central Texas. The farthest south part of the range lies in Michoacan, Mexico. In the Western United States the range also extends outside of the great basin into the Rogue River Valley in South Western Oregon and Northern California.
Pacific Gopher Snake
The Gopher snake, (Pituophis catenifer) is a harmless colubrid species found in North America. Six subspecies are currently recognized, including the nominate subspecies described here. The specific name catenifer is Latin for 'chain bearing', referring to the dorsal color pattern. They can be found in a variety of habitats ranging from desert shrub lands to low mountain areas. Like the Racer, Gopher Snakes are also frequently found in agricultural areas, utilizing the abundant prey available.
Western Ground Snake
The Western Ground Snake (Sonora semiannulata) is a species of small, harmless colubrid snake. It is sometimes referred to as the Western ground snake or variable ground snake as its patterning and coloration can vary widely, even within the same geographic region. It is native to the southwestern United States, in Texas, New Mexico, Arizona, Oklahoma, Colorado, Kansas, Missouri, Utah and California, as well as northern Mexico, in Sonora, Chihuahua, Coahuila, Nuevo León, and Durango.
Santa Cruz Garter Snake
Western Terrestrial Garter Snake
The Terrestrial Garter Snake (Thamnophis elegans) is a species of colubrid snake residing only in Southwestern Canada, and Western United States. Seven subspecies are currently recognized. Most snakes have a yellow, light orange, or white dorsal stripe, accompanied by two stripes on its side of the same color. Some varieties have red or black spots between the dorsal stripe and the side stripes. This snake often inhabits coniferous forests, and is relatively aquatic.
Northwestern Garter Snake
The Northwestern Garter Snake, (Thamnophis ordinoides) is a species of colubrid garter snake that lives in Oregon, Washington, California, and British Columbia. The garter snake is small, with adults averaging around 14-21 inches long. The northwestern garter snake is one of the most variable snakes in the world, however, no subspecies have been confirmed. The snake is most commonly found on the edge of meadows, surrounded by forest, as some sunshine is needed for their survival.
Common Garter Snake
The Common Garter Snake, (Thamnophis sirtalis) is a snake indigenous to North America. Most garter snakes have a pattern of yellow stripes on a brown background and their average length is about 1 metre (3.3 ft) to 1.5 metres (4.9 ft). The common garter snake is a diurnal snake. In summer, it is most active in the morning and late afternoon; in cooler seasons or climates, it restricts its activity to the warm afternoons.
The Western Rattlesnake, (Crotalus oreganus) is a venomous pitviper species found in North America in the western United States, parts of British Columbia and northwestern Mexico. Seven subspecies are currently recognized.
- Slevin, Joseph Richard (1928). The amphibians of western North America: an account of the species known to inhabit California, Alaska, British Columbia, Washington, Oregon, Idaho, Utah, Nevada, Arizona, Sonora, and Lower California. California Academy of Sciences.
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