Poison dart frogs

Many other frog species camouflage themselves in the wild, but the poison dart frog uses its brightly colored skin to warn predators that it is unfit to eat. The frog's skin secretes a dangerous poison that can paralyze and even kill predators. There are more than 100 species of poison dart frogs, including those that live in the Amazon. 

Climate change and habitat loss threaten their survival. WWF is working to ensure that its Amazon forest habitat remains intact.