The echidna has spines like a porcupine, a beak like a bird, a pouch like a kangaroo, and lays eggs like a reptile. Also known as spiny anteaters, they’re small, solitary mammals native to Australia, Tasmania, and New Guinea. They’re usually between 12 and 17 inches long and weigh between 4 and 10 pounds.
Absurd Creature of the Week: Forget the Platypus. The Echidna Is the True Champ of Weird
Echidna - They are spiny, but they are not related to porcupines or hedgehogs and are very different (they lay eggs, develop pouches for their babies, and use their long sticky tongues to feed on ants and termites). Their closest living relative is of course the platypus. Monotremes are of great biological interest, as they are the only mammals that lay eggs as well as having true mammalian hair and suckling their young with milk, and share various other oddities.