Torts is a huge dog lover and probably doesn't like the fact that Booth is a hunting fanatic - he can be bat**** crazy all he wants as long as he gets 20/20, who cares.
Did Booth hunt a dog or something?
I know a ton of people who are avid hunters AND dog lovers. People need to really get over that some people have different past times. You don't need to like it and nothing Booth did was illegal.