The hooded pitohui is one of the few known toxic birds. Like poison dart frogs, it builds up toxins in its body — likely from beetles that it eats — storing them most potently in its feathers which can cause an itching, burning, and numbing sensation when touched.

The pig-nosed turtle is the sole surviving species in its family. It lives in the rivers of northern Australia and southern New Guinea, using its pig-like nose to "snorkel" without exposing the rest of its body.