Thanks for the info. The dog will be a Cane Corso, a male, no other animals in the house and he will be a pet and companion for the most part. Our breeder has told us that they have neutered dogs as young as 8 weeks and it has never affected their development. I have also read this from Rottweiler breeders and a few others as well. Anyone on here have any experience or opinions on this? MM.