Cane toads that go where no cane toad has gone before pave the way for more timid toads to rapidly take over new territories, say researchers.
A boomerang-headed amphibian often met its doom in the jaws of a reptilian fin-backed mammalian ancestor.
Two species enter; one species leaves. Don't bet against the beetle.
The St. Louis Zoo has successfully bred Ozark hellbenders for the first time in captivity.