Latin name: Phyllobates terribilis, and well named, at that.
The Golden Poison Dart Frog is the most infamous of the small, colorful tree frogs in the rainforests of South America. It has a uniform bright yellow or orange color. The Choco Indian tribe of western Columbia uses the secretions on the frog's back to coat their darts with poison. One frog can produce enough toxin to kill 10 humans. Needless to say, it should not be licked.
Despite the dangers of encountering such a frog in the wild, this frog can be easily domesticated and rendered non-toxic by feeding it flies and crickets, which it seems to have no problem eating. The current theory is that the frog derives its toxins by eating toxic insects in the wild, and when it is fed local insects, it becomes non-toxic. You still shouldn't lick it, tho.
None of the Poison Dart Frogs are endangered, and there are several captive breeders that will be happy to sell you one for upwards of $100.
Thanks to whozoo.org and hylaweb.com/david/Main.html