My 9 month old sometimes brings the Dokken Mallard back by the head. To discourage this behavior a friend of mine suggested that I run some drywall screws through the head, just exposing the point around an 1/8th of an inch. He employed this method with frozen doves for his dog and said it works fine with no ill affects. What do you think? Candidly, regarding doves, my pup is only good for about 5 retrieves with one bird--before he brings back a bloody mess. Note that he is not chewing but adjusting the bird.