[Lee Stewart]

This bright little jumper looks pretty unassuming but, in keeping with the general rule that vivid colors often signal danger, it's actually the deadliest of all amphibians. In fact, the golden poison dart frog is believed to be among the most poisonous animals alive. Found in the Colombian rainforest, they grow no bigger than around two inches (5cm) long yet hold enough poison to kill 10 people. The indigenous Emberá people have long used the venom to poison darts for hunting, giving the species its name.