I have a 1 1/2 year old lab and when we walk through the forest off leash he loves to chase rabbits (there are a million in my area, very overpopulated). The other night he caught a rabbit and wanted to kill it (I believe he wanted to eat it literally) I stopped him. But is that the right thing to do? Isn't he doing what comes naturally for him? Should i next time let him kill and eat the rabbit? Will this be a positive re-enforcement or cause problems down the road. He does not do this with small dogs or anything like that just so we understand that he is not aggressive towards other dogs.