This is a dingo. A dingo is a large Australian dog that hunts Koalas. Dingo's are not actually a breed of dog though , it just looks like a dog. Its features are actually closer to a wolf.That is also the reason koalas climb trees ,they can not run fast, so they depend on Eucaylptus trees to hide and get away.(wikipedia). They do not have pray. koalas defence is to claw and scratch, then to climb trees very fast. (www.koalabuds.weebly.com).