A new study from the Smithsonian Tropical Research Institute (STRI) shows that red-eyed treefrog embryos hatch early when exposed to high ammonia levels — an environmental cue that it’s too hot and ...

A tree frog: female (larger individual below) laying eggs, which are protected by the 'foam nest' and male (smaller individual above). When it comes to laying eggs, tree frogs have some unusual habits ...

Crayfish frog, Lithobates areolatus, a large frog of the central and southern United States, that spends most of its life in the burrows of large crayfishes.© Mike Redmer/Shutterstock.com Crawfish ...

For spotted salamander embryos nearing hatching, they get by with a little help – not from friends, but from animals that are actually their predators. Voracious frog tadpoles chew on the egg masses, ...

Add Yahoo as a preferred source to see more of our stories on Google. Many amphibians use vernal pools (temporary ponds) for breeding. These ponds do not contain fish that could eat their eggs. Timing ...