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Oklahoma State University

About Our Clinics


Mission Statement

Operation Catnip Stillwater (OCS) integrates veterinary medicine and community action to decrease the number of community cats in and around Stillwater, Oklahoma. Using Trap-Neuter-Return, we strive to lower the number of cats presenting to local shelters and their subsequent euthanasia. OCS trains veterinarians and veterinary students in high quality, high volume spay/neuter techniques, promotes awareness of the value of these techniques, and provides opportunities for volunteerism to improve the lives of cats and communities.

What do we do?

Our free monthly clinics provide spay/neuter services to community/free roaming cats in and around Stillwater, OK. These clinics are held on one Sunday each month during the academic year and are staffed by volunteers. We also provide vaccinations, parasite prevention, and any additional medical attention that each community cat may need. On any given clinic day, our surgeons spay/neuter between 100-200 community cats in 6-8 hours!

What is a community cat?

Community cats include feral cats, stray and abandoned cats, and interdependent colonies of unowned, free-roaming cats. They occupy our porches, backyards, alleys, barns, and neighborhoods. Without a human address to call home, these “neighborhood cats” form colonies where food and shelter are available.

Feral cats are the offspring of stray or abandoned household pets. Raised without human contact, they avoid people. Because feral cats rarely learn to trust people, most do not make good pets. Even young feral kittens can be difficult to socialize for adoption, and are often ignored by pet rescue groups, or euthanized at animal control facilities.

How do we provide these services for free?

Operation Catnip Stillwater is a non-profit organization made possible by the generocity of Petsmart Charities and OSU-CVHS. Operation Catnip Stillwater (OCS) is staffed entirely by volunteers. These volunteers include community members, veterinarians, vet students, veterinary technicians, veterinary technician students, and undergraduates. However, the supplies needed to provide these services tend to cost around $30 per cat. We rely heavily on donations from the community and our sponsors to cover these standard costs and any further medical attention/supplies the cats may need while in our care. If you wish to make a donation, please stop by our next clinic between 7:30-9:00AM or contact us at

Why Trap-Neuter-Return?

The plight of feral cats has captured the hearts of animal lovers for many years, but only recently has a non-lethal option for their control become available. Called Trap-Neuter-Return (TNR), this humane and effective alternative involves spaying or neutering feral cats, then returning them to their colonies were they are looked after and fed by caretakers. This solution successfully decreases the population, reduces birth rates and improves the overall health of the colony. Performed on a large scale, the success of such programs is felt at animal shelters where fewer cats are admitted for euthanasia.

What OCS does What OCS doesn't do
  • Sterilize unowned stray or feral cats from Oklahoma (mostly Stillwater, OK)
  • Sterilize owned pets or strays that are for adoption or will be placed in a sanctuary
  • Provide routine vaccines and flea/tick preventatives at the time of surgery
  • Participate in cat trapping for euthanasia 
  • Permanently crop the left ears of sterilized cats
  • Participate in cat trapping for release to shelters
  • Lend out traps for caregivers to safely capture and transport cats to the clinic
  • Relocate cats