Overpopulation is the biggest contributor to the euthanization of shelter animals due to owners letting their pets accidentally or intentionally reproduce (so as to profit from their litters). It’s estimated that an unspayed dog and her puppies can produce 67,000 dogs exponentially in just a six-year period if left unchecked and only 10% of the animals received by shelters have been spayed or neutered. 

670,00 dogs are euthanized in US shelters every year. That's 76 dogs being killed DAILY for want of a home. Pit bulls (a generic term that encompasses mixes of the American pit bull terrier, the American Staffordshire bull terrier, the Staffordshire bull terrier, and the American bulldog) are the most common dog breed found in shelters in the United States and they are also the most abused with 40% never making it out of the shelter alive. 

The first line of defense in stopping the needless deaths of so many unwanted animals is spaying and neutering. Not only does it prevent overpopulation but there are health benefits for your pet, too! Spaying your female helps prevent uterine infections and breast tumors, which are malignant or cancerous in about 50 percent of dogs. Spaying your pet before her first heat offers the best protection from these diseases. Neutering your male companion prevents testicular cancer and some prostate problems. An intact male by spraying strong-smelling urine all over the house. Additionally, your dog might be less likely to mount other dogs, people and inanimate objects after he’s neutered and some aggression problems may be avoided by early neutering.