Search Search Search Topic Shelter Medicine (-) Programs & Services Spay/Neuter Active FiltersPrograms & Services Group 9 Clear All Shelter Medicine Services News and Highlights Find all the latest news from the ASPCA Shelter Medicine Services team. How to Determine a Kitten’s Age This four-step process will help you find a kitten's age. (Plus, print out our poster and keep it handy for accurate aging!) Definition and History of Pediatric Spay/Neuter Read about the history of spay/neuter in general, and the definition of pediatric S/N. Dealing With Concerns About Pediatric Spay/Neuter Need help understanding and responding to concerns about pediatric spay and neuter? This is the resource for you!