Scientists have recently discovered that the poisons secreted by these frogs can also be used to block pain in humans. Photo by Amy Snyder.
Frogs face a formidable number of predators, yet their defenses are few.
For most frogs, the best defense is to stay hidden. Other frogs will try to beat a hasty retreat. Shows of intimidation can also give predators pause. The tomato frog of Madagascar puffs itself up like a balloon, making itself appear too big to swallow. For some frogs, the ace up the sleeve is poison.