I have force fetched numerous dogs but I have a dog that, although force fetch is going well he does one thing that I'm not sure how to approach. We are past "hold" and he moves well with the bumper in his mouth. Nearly never drops the bumper. He will walk at heal or even come to heal position or remote sit in front of me with the bumper in his mouth. What he does is that he will move his head down and around to try to avoid me taking the bumper from him. He won't drop the bumper. He just ducks his head a little when I go to take it from him. He will let me take the bumper but just tries to keep it away a little.