I purchased a purebreed dog but the AKC registration is in a past boyfriends name. I have been caring for her financial and physically for 2 months along. The rabies vac is in my name. I have asked him to take her if he wants her and he says he can't right now. I have a signed doc saying if he can't care for her he will sign her over to me. But I can't force him to sign the registration over. Is the dog legally mine or what steps do I take to ensure that if he refuses to sign the registration over to me.