1. American Society for the Prevention of Cruelty to Animals. (2021). ASPCA. Position Statement on Mandatory Spay/Neuter Laws. Retrieved November, 2021, from https://www.aspca.org/position-statement-mandatory-spayneuter-laws
2. American Veterinary Medical Association. Elective spaying and neutering of pets. Gonadectomy resources for veterinarians. AVMA. Retrieved from https://www.avma.org/resources-tools/animal-health-and-welfare/elective-spaying-and-neutering-pets
3. American Veterinary Medical Association State Summary Report: Mandatory Spay/Neuter Laws. (2018). AVMA. Retrieved from https://www.avma.org/advocacy/state-local-issues/mandatory-spayneuter-laws
4. British Veterinary Association Policy Statement: Neutering of cats and dogs. (2020). BVA. Retrieved from https://www.bva.co.uk/take-action/our-policies/neutering-of-cats-and-dogs/