We have a 19 month old male GSD. He is our guard dog and he does an excellent job. I know that neutering is supposed to calm a dog but what I wonder if it will effect his protective instinct? We do not want him to become lazy and not do his job. We have a 3 month old female that will be spayed in December when she is 6 months old so if we did not neuter him he would be the only intact dog we have everyone else is fixed. So the question would be whether or not to neuter him as we are nervous about it because he is our primary guard dog. Do people fix thier guard dogs or leave them intact? Thanks look forward to hearing some opinions on this.