A rare toad changed the fate of a river by becoming the first amphibian to halt a hydroelectric dam. It's now in trouble.

The admirable little red-bellied toad is the size of a thumb, but it has achieved giant feats: In 2014, it prevented the ...

Cane toads, aka bufo toads, in Florida secrete a toxin that can harm or even kill animals that lick, bite or eat them, ...