I don't know about you, but I got fifty bucks on the dog. I don't see the boy standing a chance in this fight, even if boxing is a human sport. There are a lot of human sports that dogs could do really well at, like running competition or eating competition. You can never bet against a dog. The kid's best shot is having the dog bite him so he can win on a technicality. What sucks about that is you have to get bit.
If there is one animal that you don't want to fight, it's a kangaroo. It's not just that they can punch and kick. It's that they're tough with huge chips on their shoulder. They want to hurt you. It's not like other animals who will hurt you only because they have to.