Koalas might appear to be all cuddly and sleepy, but these star Australian marsupials are full of interesting surprises. Slightly resembling teddy bears, these marsupials are tree-climbing mammals ...

Koalas look like they belong in a children's book, but spend enough time around one, and you'll realize—they're not exactly peace-loving tree-huggers. Beneath the sleepy eyes and teddy bear vibes is a ...