Hi, I'm no breeder, but I have heard that sometimes two boy Yorkies that are not fixed will have battles for supremacy in the house, as in they may fight or mark everywhere to show who's boss. I have heard of 3 pound males mating, and I believe that is the lower limit of breedering for the male and that is generally acceptable in the Yorkie breeder community. Good luck in your search, I hope you get some more answers. |