There are different degrees of evil in the world. Human hurting/killing humans I think ranking first. But Human hurting/killing animals for betting purposes and just general all round "good times" ranks a close second.
What kind of a person looks at a dog and thinks "I can't wait to get that dog to fight another dog to the death"? What kind of a person says " I think I'll bet on a dog fight tonight"?And yet, here's another article about that sort of thing going on.