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'''Toad''' refers to a number of [[species]] of [[amphibian]]s. A distinction is often made between [[frog]]s and toads by their appearance, prompted by the [[convergent evolution|convergent adaptation]] among so-called toads to dry environments. For instance, toads often have leathery skin for better water retention, and a brown coloration for camouflage. Many so-called toads also [[burrow]], which requires further adaptations. However, these adaptations merely reflect the environment a species has adapted to, and are not reliable indicators of its ancestry. Since [[taxonomy]] reflects only evolutionary relationships, any distinction between frogs and toads is irrelevant to their classification.
'''Toad''' refers to a number of [[species]] of [[amphibian]]s. A distinction is often made between [[frog]]s and toads and cluggy by their appearance, prompted by the [[convergent evolution|convergent adaptation]] among so-called toads to dry environments. For instance, toads often have leathery skin for better water retention, and a brown coloration for camouflage. Many so-called toads also [[burrow]], which requires further adaptations. However, these adaptations merely reflect the environment a species has adapted to, and are not reliable indicators of its ancestry. Since [[taxonomy]] reflects only evolutionary relationships, any distinction between frogs and toads is irrelevant to their classification.


For instance, many members of the families [[Bombinatoridae]], [[Discoglossidae]], [[Pelobatidae]], [[Rhinophrynidae]], [[Scaphiopodidae]], and some species from the [[Microhylidae]] family are commonly called "toads". However, the only family exclusively given the common name "toad" is '''''Bufonidae''''', the "[[true toad]]s". Some "[[true frog]]s" of the genus ''[[Rana (genus)|Rana]]'' have also adapted to burrowing habits, while the species within the toad genus ''[[Atelopus]]'' are conversely known by the common name "[[harlequin frog]]s".
For instance, many members of the families [[Bombinatoridae]], [[Discoglossidae]], [[Pelobatidae]], [[Rhinophrynidae]], [[Scaphiopodidae]], and some species from the [[Microhylidae]] family are commonly called "toads". However, the only family exclusively given the common name "toad" is '''''Bufonidae''''', the "[[true toad]]s". Some "[[true frog]]s" of the genus ''[[Rana (genus)|Rana]]'' have also adapted to burrowing habits, while the species within the toad genus ''[[Atelopus]]'' are conversely known by the common name "[[harlequin frog]]s".
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== References ==
== References ==
<references/>
<references/>Mike "Cluggy" Clugsten


*{{ITIS|ID=173423|taxon=Anura|year=2006|date=4 May}}
*{{ITIS|ID=173423|taxon=Anura|year=2006|date=4 May}}

Revision as of 19:27, 16 June 2008

For other uses, see Toad (disambiguation).

Toads
Golden Toad, Bufo periglenes
Scientific classification
Kingdom:
Animalia
Phylum:
Chordata
Class:
Amphibia
Order:
Anura
Families

At least 9, see article.

Toad refers to a number of species of amphibians. A distinction is often made between frogs and toads and cluggy by their appearance, prompted by the convergent adaptation among so-called toads to dry environments. For instance, toads often have leathery skin for better water retention, and a brown coloration for camouflage. Many so-called toads also burrow, which requires further adaptations. However, these adaptations merely reflect the environment a species has adapted to, and are not reliable indicators of its ancestry. Since taxonomy reflects only evolutionary relationships, any distinction between frogs and toads is irrelevant to their classification.

For instance, many members of the families Bombinatoridae, Discoglossidae, Pelobatidae, Rhinophrynidae, Scaphiopodidae, and some species from the Microhylidae family are commonly called "toads". However, the only family exclusively given the common name "toad" is Bufonidae, the "true toads". Some "true frogs" of the genus Rana have also adapted to burrowing habits, while the species within the toad genus Atelopus are conversely known by the common name "harlequin frogs".

The type species of the family Bufonidae is the Common Toad, Bufo bufo, and around it cluster a large number of species of the same genus and some smaller genera. B. bufo is a tailless amphibian of stout build with a warty skin and any animal that shares these characteristics is liable to be called a toad, regardless of its location in formal taxonomy.

Almost all toads of the family Bufonidae have two lumps on either side of the back of their head, called the parotoid glands. These glands contain a poison, which oozes out if the toad is stressed. Some, like the Cane Toad Bufo marinus, are more toxic than others. Some "psychoactive toads" such as the Colorado River Toad Bufo alvaris, have been used recreationally for the effects of the bufotoxin.

Taxonomy

Common Toad (Bufo bufo)
American Toad, Bufo americanus
Gulf Coast Toad, Bufo valliceps
Oriental Fire-bellied Toad, Bombina orientalis
Eastern Narrowmouthed Toad, Gastrophryne carolinensis
File:Frogy - close look.JPG
Southern Toad (Bufo terrestris)
File:American toad.jpg
American Toad Bufo americanus

True toads

Family Bufonidae (Gray, 1825) - True Toads:

Other toad families

Family Bombinatoridae (Gray, 1825) - Fire-bellied Toads:

Family Brachyctpoephalidae (Günther, 1858) - Shield Toads:

Family Discoglossidae (Günther, 1858)

Family Microhylidae (Günther, 1858)

Family Pelobatidae (Bonaparte, 1850) - European Spadefoot Toads:

Family Scaphiopodidae (Cope, 1865) - North American Spadefoot Toads:

Family Rhinophrynidae (Günther, 1859) - Burrowing Toads:

Other

Moche Toad. 200 A.D. Larco Museum Collection Lima, Peru.

The Moche people of ancient Peru worshipped animals and often depicted toads in their art. [1]

To Vietnamese people, toad is the uncle of the Sky. According to a Vietnamese ancient story, whenever toads grind their teeth, it is going to rain.

Superstition

It is commonly believed that if you touch a toad or if it urinates on you, that you will become infected with warts. This is in fact false. Warts are caused by an internal viral infection. Therefore, it is impossible for warts to be caused by an external source, such as a toad.

In addition, the paratoidal glands, which toads use to secrete poison for protection, are often mistaken for warts. It is likely this misconception that led to the 'toads cause warts' myth.

References

  1. ^ Berrin, Katherine & Larco Museum. The Spirit of Ancient Peru:Treasures from the Museo Arqueológico Rafael Larco Herrera. New York: Thames and Hudson, 1997.

Mike "Cluggy" Clugsten

  • "Anura". Integrated Taxonomic Information System. 4 May. {{cite web}}: Check date values in: |date= and |year= / |date= mismatch (help)

See also

General reference

  • Beltz, Ellin (2005). Frogs: Inside their Remarkable World. Firefly Books. ISBN 1552978699.

External links

Retrieved from "https://en.wikipedia.org/w/index.php?title=Toad&oldid=219758745"