The Question: The koala’s closest living relative is the…
A Tasmanian devil
Koalas are most closely related to wombats, which are also marsupials. Like koalas, wombats are herbivores but have a more diverse diet. They’re also bigger and live underground. They have powerful claws and rodent-like teeth to dig burrows.
Another distinctive feature of wombats is their backward-facing pouch, an advantage when digging a burrow as dirt doesn’t get inside the pouch. Wombats also excrete cube-shaped dung, which they stack as a way of marking territory and attracting mates.
The correct answer is Wombat.