Is it a porcupine or an anteater? Neither, actually. The long-beaked echidna is a rare egg-laying mammal found in Papua New Guinea. This nocturnal critter is a relative of the platypus, but lives underground where it uses its tube-like snout to search for invertebrate prey like insect larvae and worms. It has to eat soft foods, because it doesn’t have any teeth. Hatchlings are known as puggles, and they reside in a sticky pouch to receive milk from mammary patches on the mother’s body.