Echidnas, also called spiny anteaters, are some of the weirdest mammals in the world. They're among the only mammals that don't give birth to live babies, and they also carry their young in a pouch.

Spiny, snooty, and strange, echidnas are among Australia's wackiest animals. They're mammals, which means they feed their young milk, but only after the puggle (that's the word for a newborn echidna) ...