Spay/Neuter Services

Worker standing in front or surgery center office.

Spaying/neutering of all pets is encouraged at an early age for the better health of the pet. The listed clinics below are Animal Care Services (ACS) partners for free and low cost spay/neuter. Appointments are required and each clinic has a different process.

We also urge all pet owners to establish a relationship with a veterinarian to protect the health of your pet. View an inclusive list of area vets on the Yellow Pages.

Find a Clinic

Pet Shotz

Pet Shotz offers free ACS sponsored surgeries and low-cost services.

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Appointments: 210-505-3778


3306 N. St. Mary's
San Antonio, TX 78212

San Antonio Humane Society

San Antonio Humane Society offers free ACS sponsored surgeries and low-cost services.

View San Antonio Humane Society's Process

Main Campus

Phone: 210-226-7461

4804 Fredericksburg Rd.
San Antonio, TX 78229

Animal Defense League

Animal Defense League offers free ACS sponsored surgeries.

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Phone: 210-655-1481, ext. 104

11300 Nacogdoches Rd.
San Antonio, TX 78217

SNAP Spay-Neuter & Animal Wellness Clinic - San Antonio


SNIPSA offers free ACS sponsored surgeries.

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Phone: 210-237-9400

Spay Neuter Network

Appointments can be made anytime at Spay Neuter Network through the call center from 8am-5pm at 972-472-3500.

View Spay Neuter Network Process

210 Tuleta
San Antonio, TX 78212

Top Ten Reasons to Fix Your Pet

  1. Your female pet will live a longer, healthier life.
    Spaying helps prevent uterine infections and breast cancer, which is fatal in about 50 percent of dogs and 90 percent of cats. Fixing your pet before her first heat offers the best protection from these diseases.
  2. Neutering provides major health benefits for your male pet.
    Besides preventing unwanted litters, neutering your male companion prevents testicular cancer, if done before six months of age.
  3. Your fixed female won't go into heat.
    While cycles can vary, female felines usually go into heat four to five days every three weeks during breeding season. In an effort to advertise for mates, they'll yowl and urinate more frequently — sometimes all over the house!
  4. Your male dog won't want to roam away from home.
    An intact male will do just about anything to find a mate! That includes digging his way under the fence and making like Houdini to escape from the house. And once he's free to roam, he risks injury in traffic and fights with other males. Remember! If your dog roams off your property you can be cited!
  5. Your neutered male will be much better behaved.
    Neutered cats and dogs focus their attention on their human families. On the other hand, unneutered dogs and cats may mark their territory by spraying strong-smelling urine all over the house. Many aggression problems can be avoided by early neutering.
  6. Spaying or neutering will NOT make your pet fat.
    Don't use that old excuse! Lack of exercise and overfeeding will cause your pet to pack on the extra pounds — not neutering. Your pet will remain fit and trim as long as you continue to provide exercise and monitor food intake.
  7. It is highly cost-effective.
    The cost of your pet's spay/neuter surgery is a lot less than the cost of having and caring for a litter. You may even qualify for FREE or affordable services! It also beats the cost of treatment when your unneutered dog or cat escapes and gets into fights with the neighborhood stray!
  8. Spaying and neutering your pet is good for the community.
    Roaming animals pose a real problem in many parts of the country. They can prey on wildlife, cause car accidents, and frighten children. Spaying and neutering packs a powerful punch in reducing the number of animals on the streets.
  9. Your pet doesn't need to have a litter for your children to learn about the miracle of birth.
    Letting your pet produce offspring you have no intention of keeping is not a good lesson for your children — especially when so many unwanted animals end up in shelters. There are tons of books and videos available to teach your children about birth in a more responsible way.
  10. Spaying and neutering helps fight pet overpopulation.
    Every year, millions of cats and dogs of all ages and breeds are euthanized or suffer on the streets. These high numbers are the result of unplanned litters that could have been prevented by spaying or neutering.