Free spay or neuter package (surgery, rabies and DHPP or FVRCP shot, microchip) for pets in qualifying San Antonio zip codes. Others pay $100 to $250 for surgery alone. Request online with a $40 refundable fee.
Only for people in 28 ZIP codes: see below
Appointment only, no walk-ins
2 rules on which pets they take: see below
Prices are on their site (17 listed below)
Who can use it
Free packages are for dogs and cats living in qualifying zip codes: 78201, 78202, 78203, 78204, 78205, 78207, 78208, 78210, 78211, 78213, 78214, 78218, 78219, 78220, 78221, 78222, 78223, 78224, 78225, 78226, 78227, 78228, 78229, 78235, 78237, 78238, 78242, 78264. Pets elsewhere in the San Antonio area can book at low-cost prices.
Every pet having surgery gets a rabies shot and microchip (city rule)
Request an appointment on SNIPSA's website and pay a $40 reservation fee. It's refunded if you cancel at least 24 hours ahead.
When
Free zip-code surgeries happen weekly at SNIPSA's office. Free Big Fix clinic events are also held for qualifying zip codes; the next is planned for fall 2026.
What it costs
package, male dog
$270
package, female dog
$320
package, male cat
$170
package, female cat
$220
dog neuter only
$200
dog spay only
$250
cat neuter only
$100
cat spay only
$150
rabies vaccine
$15
DHPP vaccine
$25
FVRCP vaccine
$25
microchip
$33
pregnant
$50
dogs over 100 lbs
$50 per extra 50 lbs
IV fluids and catheter for flat-faced dogs
$60
package for qualifying zip codes
Free
reservation fee
$40
What they do
no-cost spay/neuter packages for qualifying zip codes (surgery, DHPP or FVRCP, rabies, microchip)
low-cost spay/neuter for other San Antonio-area pets
Big Fix free spay/neuter clinic events
For dogs, cats.
Good to know
Cancel at least 24 hours ahead or you lose the $40 fee.
County shelter · 4804 Fredericksburg Rd., San Antonio
Low-cost shots, heartworm tests and flea and heartworm meds, Monday to Friday, 10am to 2pm, by appointment. Rabies shot is $17. You pay a $16.50 deposit when you book. They don't treat sick pets.
Low-cost vet for check-ups, shots and common problems like itchy skin, urinary issues, heartworm and parvo. Exams are $45. Open Monday to Friday, 8am to 5pm, by appointment.
Grants of up to $1,000 toward emergency vet care for low-income pet owners in Bexar and nearby counties. You pay 10% of the bill plus anything over $1,000. Apply before treatment, with your vet's estimate.