However, only poisonous bugs aid to this toxic touch. At the Caldwell Zoo, poison dart frogs are fed a diet to neutralize their poison. "So here in a zoo setting we are feeding them pinhead ...

Curare [kyoo-RAW-ree], for example, is found on the skin of colorful poison dart frogs. Another special feature of most amphibians is their egg-larva-adult life cycle. The larvae are aquatic and ...

But don't get down on yourself for not being as cute as a poison dart frog or as stunning as an Arctic fox. There are reasons why these critters are so gorgeous — most have to do with evolution.