Having a dog neutered or spayed has nothing whatever to
do with a dog's being aggressive or non agressive. Training
or lack of it has everything to do with it. Blaming a dog's
aggression on neutering is like saying there's no hope,or use
in trying to fix the problem. The problem behavior can be "fixed"
and it involves commitment & work by it's owner & a good
training instructor. Good luck with your dog.