There is so much more to hunting than simply taking a life, and if you were truly in an Animal Management course at the college level, you would know this. Hunting is a large and rather important part of conservation, and I beg of you, do some research. I also need to say that as a hunter, I am extremely offended at being called a poacher. "They are the same thing." No, they're not. I am a hunter. I am not a poacher, and I will not tolerate being called one.
About humans being killed for fun, there is evidence that suggests dolphins may kill for fun. Of course, we will never know if an animal kills for fun. As you said, Sadies, animals do not think the way we do. So how do you know that they aren't killing for fun? How do I know that they aren't killing just to eat? Does it really matter? All we know for sure is that they (animals) do kill, and that many predators, wolves included, will sometimes slaughter large amounts of prey and simply leave it there for no reason known to us.