Toad can refer to a number of species of amphibians.
A distinction is often made between frogs and toads on the basis of their appearance, prompted by the convergent adaptation among so-called toads to dry environments, which often entails a brown skin for camouflage that is also dry and leathery for better water retention. Many so-called toads also burrow, which requires further specific adaptations. However, since these adaptations merely reflect the environment a species has adapted to, they offer no reliable guidance as to what other species it evolved from. Since taxonomy is meant to only reflect these evolutionary relationships, the aforementioned distinction of frogs and toads gives no clue 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."
More on [ Toad ]
Frogs and Toads :: Amphibians
Frogs :: Animals
Frogs and Toads :: Reptiles and Amphibians

Biology of the Frog - Information and facts including anatomy, life span, diseases, and history.
Meta Description: [ What you need to know about frogs ]
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Connecticut Frogs - Includes pictures and details about life span, coloring, reproduction, and habitat of the state's frogs and toads. From Connecticut State Museum of Natural History at UConn.
Deformed Frogs in Minnesota - Information on possible causes and what the MPCA and other organizations are doing about deformed frogs.
Meta Description: [ Information about Deformed Frogs in Minnesota on the Web Site for the Minnesota Pollution Control Agency ]
Exploratorium: Frogs - Features an online exhibition, frog myths across cultures, and sound files.
Meta Description: [ Frogs @ The Exploratorium: An online exhibition exploring the amazing, adaptable frog. ]
Frogs and Toads of Georgia - Detailed species accounts with photos, illustrations, calls, and range maps for 32 species.
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Frogs and Toads of South Carolina and Georgia - Images, sounds, and species descriptions.
Frogs Australia Network - Information about Australian frogs and their conservation.
Meta Description: [ Proudly hosted by Zoos Victoria, Frogs Australia is a national network about: 1) Increasing the knowledge and awareness of Australian frogs and their conservation. 2) Linking groups and individuals interested in frogs across Australia. 3) Improving the sharing of information between science and c... ]
Frogs of Australia - Comprehensive guide including descriptions, distributions, breeding calls, identification key, and a glossary.
Meta Description: [ The definitive guide to the Frogs of Australia. There's descriptions, distributions, breeding calls, location or physical description search, and a glossary to explain difficult terms. ]
Frogs of New England - ThinkQuest resource and game page for students. It describes the anatomy, the habitats, and the life cycle of local amphibians.
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Frogs of South America - Photographs of frogs of Ecuador, Trinidad, Tobago, and the Lesser Antilles.
Meta Description: [ Frogs of Ecuador, Trinidad, Tobago, and the Lesser Antilles, a comprehensive photographic guide ]
Frogs of Tasmania - A guide to Tasmania's frogs from the Tasmanian Parks and Wildlife Service. Includes sound files of frog calls.
Frogs of the Malay Peninsula - Guide to the frogs of the Malay Peninsula (Thailand, Malaysia and Singapore), with photos, descriptions, and audio. Includes information about biology and ecology, checklists, field tips, and references.
Frogwatch USA - A frog and toad monitoring program by the National Wildlife Federation in partnership with the United States Geological Survey.
Meta Description: [ The FrogwatchUSA program is a partnership between USGS and National Wildlife Federation regarding monitoring of frogs and toad species populations. ]
FrogWeb - A multi-agency initiative that provides information about recent, global declines and deformities among amphibian populations.
Meta Description: [ FrogWeb is a multi-agency initiative that provides information about
recent, global declines and deformities among amphibian populations, and efforts
made by scientific agencies to study and address the phenomena. ]
Jurassic Frogs - Study on reconstructed skeleton of a frog that hopped among the dinosaurs nearly 200 million years ago.
Kentucky Frogs and Toads - Listing of the species of frogs and toads that inhabit Kentucky. Offers photographs of species, a range map, and sound files of their calls.
MidWest Frogs - Video clips of frog calls in QuickTime format.
Meta Description: [ Video clips of Frog calls - an evolving webumentary from Ravenswood Media ]
Nova Scotia Frogs - Photos and descriptions of species endemic to the region.
Order Anura - Description of the families of the order, including characteristics and behaviour.
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Scientific American: Explaining Frog Deformities - An eight-year investigation into the cause of a shocking increase in deformed amphibians has sorted out the roles of three prime suspects.
Meta Description: [ Science and Technology at Scientific American.com: Explaining Frog Deformities -- [ ENVIRONMENT ] -- Science and Technology from Scientific American: daily science news and technology news, science trivia, science experts, science newsletters, science shop, science books and more ]
Tadpoles of the United States and Canada: A Tutorial and Key - An approach to identifying frog larvae using characteristics of living tadpoles. Includes photographs.
Toronto Area Frogging - Volunteer to conduct an area frog survey or just look over the wealth of information available here.
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Westward Frog! - Information about the frogs and toads of California and threats to the survival of the state's amphibians. Includes a bibliography of field investigation methods and a directory of researchers.
Whole Frog Project - An interactive frog dissection kit, movies, sounds, and information.
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