Symbiosis is the long-term relationship between two different species that can sometimes be beneficial to both parties. These ...

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 ...

Bone claws, oxygen-absorbing “hair,” and hands-on frog dads. Meet the hairy frog (or wolverine frog), one of nature’s strangest amphibians.

Amphibians are cold-blooded animals that can live both in the water and on land. When we think of amphibians, frogs and toads instantly jump to mind. Usually, we think of frogs as being quite small.

Frogs are interesting creatures, but they are best admired in marshes and other natural habitats, not on your front porch.