The amphibian order Salientia or Anura consists of the frogs and toads. There is no scientific distinction between "frogs" and "toads." Frogs are typically smooth-skinned, have long hind limbs for leaping, and live in water. Toads have warty, drier skin, with shorter hind limbs for hopping, and live on land. Sites in this category deal with the biology of frogs and toads as they exist in nature, including topics such as description, taxonomy, life cycle, and conservation.

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Amphibian Ark
An international partnership to ensure the global survival of amphibians, especially those that cannot be safeguarded in nature. Includes background information, campaign resources, activities, petition, news, and contacts.
Biology of the Frog
Information and facts including anatomy, life span, diseases, and history.
Deformed Frogs in Minnesota
Information on possible causes and what the MPCA and other organizations are doing about deformed frogs.
Exploratorium: Frogs
Features an online exhibition, frog myths across cultures, and sound files.
Frogs and Toads of Georgia
Detailed species accounts with photos, illustrations, calls, and range maps for 32 species.
Frogs of Australia
A guide including descriptions, distributions, breeding calls, identification key, and a glossary.
Frogs of South America
Photographs of frogs of Ecuador, Trinidad, Tobago, and the Lesser Antilles.
Frogs of Tasmania
A guide to Tasmania's frogs from the Tasmanian Parks and Wildlife Service. Includes sound files of frog calls.
Living with Wildlife: Frogs
The Washington Department of Fish and Wildlife provides information on the species found in the state, their natural history and their interactions with man.
Northern Leopard Frog
A description of the leopard frog [Rana pipiens].
Tadpoles of the United States and Canada: A Tutorial and Key
An approach to identifying frog larvae using characteristics of living tadpoles. Includes photographs.
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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