After a long and frigid winter, the sound of spring peepers singing from beaver bogs is a welcome one for New Englanders. But ...

She pulls on a broad green leaf still attached to a branch and points out a shiny clutch of jellylike eggs. “These guys are hatchable,” she says. Red-eyed tree frogs, Agalychnis callidryas ...

When Xenopus frog eggs are experimentally ruptured, their cytoplasm rearranges itself to form compartments similar to cells, according to a study published October 31 in Science. The researchers, led ...

was thought to be extinct in some countries By Danna Staaf The horned marsupial frog, which carries its eggs in a pouch on its back, lives in the canopy of tropical rainforests. Javier Aznar ...

Two black beady eyes, a short rounded head, four stumpy legs, and a face only a mother (or a herpetologist) could love: Meet ...

Frogs mate in a position called amplexus, with the smaller male clasping the female from behind in a ride that can last two days or more. As she lays eggs, he expels sperm to fertilize them.

Frogs are amphibians. In the spring, female frogs lay thousands of eggs in pools or streams. Little black dots in clear jelly balls called frog spawn. The black dots eat the jelly and grow.

From an Australian frog that swallowed its own eggs to woolly mammoths, scientists are getting ever closer to being able to bring long-lost species back from the dead. Millions of years ago ...