Biology of the Frog: Information and facts including anatomy, life span, diseases, and history.
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.
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 Australia Network: Information about Australian frogs and their conservation.
Frogs of Australia: Comprehensive guide including descriptions, distributions, breeding calls, identification key, and a glossary.
Frogs of New England: ThinkQuest resource and game page for students. It describes the anatomy, the habitats, and the life cycle of local amphibians.
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.
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.
FrogWeb: A multi-agency initiative that provides information about recent, global declines and deformities among amphibian populations.
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.
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.
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.
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.
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.