I was watching the Wolverine movie... the will.i.am character says, 'don't dogs kill cats?'. I'd like to answer that rhetorical question.

Dogs only kill cats depending on how the dogs are raised and how big the cats are. Show me any dog who could last even 10 seconds against a lion, tiger, leopard, jaguar or cougar. Even a bobcat or lynx could probably defeat the meanest of wolves. Cats are the fiercest of natural fighters, only rivaled by bears. Dogs are nothing more than tyrants.