California Red-Legged Frog - Information about Rana aurora draytonii, a threatened frog of the western US. Mountain Yellow-legged Frog (Rana muscosa) - Photos of this species and its habitat. Includes identifying traits and facts on natural history, range, reproduction, and conservation status. Goliath Frog - Information from Wikipedia on frogs in the genus Conraua which include the largest known species and which are considered endangered. Green Frog - Student project on Rana clamitans including classification, habitat, adaptation, nutrition, reproduction and interactions with other species. American Bullfrog: Rana catesbeiana - Student project by Kelly Schams including classification, habitat, adaptation, nutrition, reproduction and interactions with other species. Rana pipiens - Student project on the common northern leopard frog, including classification, habitat, adaptation, nutrition, reproduction and interactions with other species. Goliath Frog: Conraua goliath - Photographs, video clip and information from ARKive including classification, status, description, range, habitat, biology, threats and conservation. Common Frog: Rana temporaria - Videos, photographs and information from ARKive including classification, status, description, range, habitat, biology, threats and conservation. Family Ranidae - Classification, information, pictures, and sounds. From the Animal Diversity Web. Water Frog Information Pool - Information about several species and hybrids in the genus Rana. Conraua goliath - Details of this frog which is on the IUCN red list where it is considered endangered, its range, habitat, ecology, threats and conservation measures.