I have several dogs reg thru ukc. I recently breed a female to a stud for a fee.stud owner and his partner(dog is co-owned) both signed papers for me to send off for pups permanent registration apparently which I have gotten back and all pups are currently reg in my name only (no co-owns due to stud owner receiving fee instead of pup back). Stud owner recently saw pups and now says I should 'give' him a pup due to this breeding turning out so well. He is threatening to put a stop on pups reg if I don't give him a male pup. So my question: can he do anything about these pups reg since they r already reg to me?