i have 2 female yorkies and a male yorkie. my male yorkie fights my girls. he won't let them eat and if my girls are playing he attacks them and it's a great big fighting match. it scares me to death. he takes more aggression out on one of my girls more than the other. i don't know what the problem is either. both my girls came in heat a week apart and he only wanted the one. the other girl that he is meaner to, he wanted nothing to do with her. i'd like to know what to do about this too