One year after opening in 2019, the SNYP Clinic restricted our spay neuter services to cats only.  This decision was made because our space, less than 700 square feet, is too small to accommodate dogs, and because cats present a higher priority in terms of our mission to reduce suffering associated with companion animal overpopulation.  Feline reproductive potential significantly exceeds that of dogs.  Compared with dogs, cats breed more frequently and begin breeding younger:  cats produce 2-3 litters yearly and often begin breeding at 16 weeks of age.  Because of their predatory nocturnal behavior, feral cat populations are able to thrive in all sorts of neighborhoods and grow quickly, often undetected.  Our mission to reduce the suffering associated with unwanted litters and our special constraints have lead us to most efficiently focus our energy and resources on owed, feal and shelter cats.