I don't neuter my dogs. I think they just do better health-wise. But if I did, I would wait until they were a year old, especially on a slow-maturing breed. We are considering getting a medium sized dog for my son. I will most likely have him neutered because 2 unaltered dogs in the house = marking territory. And it would be nice to be able to take a dog somewhere and not worry about it fighting with other intact dogs or trying to hump everything. Lol