Above is a link to a study by Banfield Pet Hospital. They have extensive statistics to support the health benefits of spaying and neutering. There are many pet owners who do not believe in the sterilization of their pets. For years animal shelters have supported spaying and neutering. Shelter workers are on the front line of the problems associated with pet over population. Now we have current ammunition to show that spaying and neutering has health benefits for your pet. My favorite benefit is longevity. You'll see when you read the study.