The general rule of spaying or neutering is at the age of 6 months old. We have been offering these services at a younger age as well. If you have decided to have your cat declawed, we can do this at age 3 months, at this time if his testicles have properly descended, we will neuter him as well, as not to have to subject him to anesthesia again.
The only down side might be if you own a small breed dog i.e. poodle, yorkie, etc. Small breed dogs sometimes have problems properly shedding their baby teeth. Adult canine teeth or "fang teeth" are fully in place by 6 months of age. If your puppy has not properly shed these teeth by the age of 6 months we then extract them at the time of her spay.