My Ziggy is over a year old and I have yet to go get him neutered! I too do not plan to breed him. I have waited this long because
- His small size (he is 3lbs right now)
-I have once lost a puppy while being spayed (a german shepherd)
- I had two male german shepherds who were unneutered and lived long, happy healthy lives. (never had any offspring)
- Ziggy does not mark inside our home
My other dog, a rescued shelter lab mix is neutered. So I do believe in it, I just have fears. But I will be neutering Ziggy before the end of this year becasue
- He has an undescended testicle and I dont want that to make him sick
- I want to get him a baby sister early next year
- He has 2 retained puppy teeth
I think its a personal descision, but just weigh the pro's and con's of each. I spoke to my neighbor who had her yorkie neutered at my vet and she had only rave reviews

I have my reservations about neutering, but I think it does have it benefits in my situation. I always assess my pets on individual basis (with the help of research and getting advise from others and my vet)
Only you can decide based on your research and your heart
Good luck with your decision
