This will give you nightmares. Throw a little water on a cuddly little koala and this is what you get. (I’m not sure those fangs haven’t been photoshopped, but still…)
UPDATE: Yup, just looked it up. It’s PhotoShop. In reality, koalas have a couple sharp teeth right in the middle of each jaw (good for shredding those eucalyptus leaves that comprise 100% of their diet) and a bunch of flat back teeth (good for chewing those leaves). Here’s what they look like.