Female spadefoot toads flout the general evolutionary rule of not breeding with other species. Under some conditions they mate with other species to help boost the survival rates of their offspring.
Zoologist Andrew Gray from Manchester Museum has rediscovered Isthomhyla rivularis in the remote forests of Costa Rica in Central America many years after it was last seen.
The Amazon rainforest may be more resistant to rising temperatures than has been believed, but researchers say it is unclear how the forest would respond to a long term drought.
Hellbenders prefer stream environments with large, flat rocks and plenty of crayfish. Juvenile hellbenders are susceptible to predation from fish, herons and larger hellbenders. Adults can perish from an area when sediment coats the rocky stream bottom.
The yellow-legged frog population in the Willamette Basin or Oregon has gone from very abundant to almost completely extirpated in less than 50 years. A few dozen breeding-age yellow-legged frogs in two sites are all that remain.