Because they want to have something in common with Al Qaeda and the Taliban - which is no dog fighting. *sarcasm*
The point is you shouldn't try to get animals to fight, in nature they may fight but we shouldn't play god with animals.
I don't like the idea of needless violence.
It's kind of hard when no one knows your teacher. If you could you should add details on what exactly your next two classes are going to be about - or what will be covered.
And then maybe someone could suggest books/websites to read.