-Discussed the benefits of neutering. Neutering eliminates the possibility of testicular cancer and greatly reduces the chance of prostate disease, two extremely common and serious problems of older male dogs. Many older dogs that are not neutered will develop prostate disease or testicular tumors if they survive to an old enough age. Neutering can also reduce the risk of perianal tumors and perineal hernias. The recommendation to have this procedure performed is at 6-8 months of age or 9 months to 1 year for large breed dogs.