Cats: Neutering your male cat can help to curb problematic behaviours such as spraying, roaming, and aggression toward other cats. Spaying your female cat may help prevent your kitty from yowling, urinating inappropriately, and making repeated attempts at escaping your home.Dogs: Neutering your male dog may help to curb behaviours such as aggression towards other dogs, 'humping', and the desire to escape your home or yard. Having your female dog spayed ends their heat cycle and helps prevent pyometra (womb infection) and mammary tumours.