San Francisco SPCA Hospital
Free or low-cost spay/neuter for pets of San Francisco residents. By appointment only and the animal must be current on vaccinations. 201 Alabama St. at 16th St. 415-554-3030.

Peninsula Humane Society Mobile Van
Free spay/neuter. No appointment necessary; first come, first served. Pets are fixed from 8am – 9am but we recommend arriving as early as possible, even by 5:30am or 6am. Only one pet per family. Pet must be older than 4 months and younger than 8 years old. No dogs over 80 pounds. Pet must not eat after midnight the night before; water is ok. Must be current on vaccinations. Questions only call 650-340-7022, x387.

Low-Cost Vaccinations

VETCO Clinics
VETCO Clinics aspire to provide a positive, affordable, professional health care option for pet owners. We are dedicated to professionalism and advancement of the veterinary field through cooperation with veterinary colleagues, practices and teaching institutions nation wide. To find the nearest Affordable Dog and Cat Vaccination Clinic, please visit our Clinic Locator. Questions? Give Vetco a call at 1-877-838-7468.

If you are homeless in San Francisco, San Francisco Community Clinic Consortium’s Veterinary Street Outreach Services (VET SOS) project offers free vet services for your companion animal(s). The van typically provides services on the second Friday of each month and at Project Homeless Connect events. Call VET SOS at 415-355-2248 or visit their webpage at for the next clinic dates, locations and eligibility guidelines.

VIP Pet Care
VIP Petcare Services holds over 200 clinics in Northern California per month. They offer all canine and feline vaccinations, microchipping, blood and fecal testing, flea and tick control, ear mite treatment, deworming, and heartworm prevention at all clinic locations. Services are provided by a state licensed veterinarian without an exam fee. No matter where you live in their service area, there is a Saturday or Sunday clinic nearby. Search by your zip code here to find the most convenient time and area.