I have all three of my males neutered. It does keep the peace in the house. I had Bronx fixed when Zowie went into heat again. In Dec. one of the boys started to notice his sister and I called that day and took them both in. I can't really see breeding again, I will probably start getting the girls fixed soon. I might rather get a biewer or another differently colored yorkie, a blonde like Julie or Kim have, or even a chocolate or party color.