It's probably not a very wise choice to allow your dogs to kill and behead birds. They can carry diseases and make them sick. I've talked about Pebbles being a hunter but I always try to alert any bunnies in our yard that I'm letting them out. Rabbits carry fleas and also intestinal worms that can be transmitted to dog.
__________________ “Never argue with a fool, onlookers may not be able to tell the difference.”  Mark Twain |