Wombats are among the most peculiar of animals. They look like a massively overgrown guinea pig with a boofy head, a waddling gait, squared-off butt, backwards-facing pouch and ever-growing molars. Indeed, wombats are oddballs and don't look much like their nearest living relatives, the koala. But koalas and wombats (collectively known as "vombatiformes") are the