http://en.wikipedia.org/wiki/Golden_Poison_Frog

The golden poison frog, like most other poisonous frogs, stores its poison in skin glands. Due to their poison, the frogs taste vile to predators; P. terribilis' poison kills whatever eats it, except for a snake, Liophis epinephelus. This snake is resistant to the frog's poison, but is not completely immune.

http://www.ansci.cornell.edu/courses/as625/2005term/Elaine/Dendrobates.htm

jak som povedal, had asi vyhra :)