Spay/Neuter Service

The Animal Defense League (ADL) offers spay and neuter services for owned cats and dogs as well as feral cats.  Each pet must weigh at least two pounds before surgery.  Spay/neuter services are provided at the ADL hospital, located at 11215 Iota Drive, San Antonio 78217.  A map of the hospital is located here.

Visit FREE SPAY AND NEUTER SURGERIES FOR OWNED CATS AND DOGS to see if you qualify for free surgeries for your pets!

Visit FELINE FRIDAYS to view special surgery days for owned cats and feral cats!

Owned Cats and Dogs:

Clinic services for owned pets are offered on an appointment basis only.  Spay and neuter surgeries are scheduled for Monday through Wednesday and Fridays for owned pets.  To make an appointment please call 210-655-1481 ext. 104 or 112 between the hours of 10:00am and 3:00pm on Monday – Friday and between the hours of 9am and Noon on Saturday.  No voice mails are accepted.  A $35 non-refundable surgery deposit will be required prior to an appointment being scheduled. Please ask the ADL hospital staff for details. Each pet owner with an appointment must arrive between 7am and 9am.  Dogs must be on a leash or in a cage.  Each cat must be in a cat carrier and each cat must be in its own carrier.  Pickup is from 4pm – 5pm on the day of the appointment. If you would like to request an appointment online please fill out the request form at the bottom of this page.

The regular prices for our spay/neuter services are as follows:

Male cat $50 Female cat $70
Male dog under 25 lbs $65 Female dog under 25 lbs $75
Male dog 25 – 50 lbs $75 Female dog 25 – 50 lbs $90
Male dog 51 – 75 lbs $90 Female dog 51 – 75 lbs $110
Male dog over 75 lbs $110 Female dog over 75 lbs $140

There is no need to qualify for our regular low cost spays/neuter surgeries offered at our clinic. All animals must weigh at least two pounds in order to undergo a surgical procedure.

Services Available During Spay/Neuter Appointments:

  • Rabies Vaccination (required): $20 (Written proof that your animal has had a rabies vaccination is required. If proof is not provided, the animal will be vaccinated and the owner will be charged accordingly.)
  • Canine bordatella immunization: $20
  • Canine booster (RDAPP): $25
  • Feline booster (FVRCP): $20
  • Nails clipped: $15
  • Heart Worm Test: $25
  • Fecal Exam and Deworming: $35
  • FIV/FELV (test only): $25
  • Microchipping: $25
  • Canine Package (Rabies/RDAPP): $35
  • Feline Package (Rabies/FVRCP): $30

FREE Spay and Neuter Surgeries for Owned Pets:

The ADL, in partnership with the City of San Antonio Animal Care Services, will be offering free spay and neuter surgeries to individuals who live in following zip codes: 78201, 78202, 78203, 78204, 78207, 78210, 78211, 78212, 78213, 78214, 78218, 78220, 78221, 78222, 78223, 78225, 78228, 78242 & 78250. Appointments are required. Pet owners can call the ADL hospital appointment line at 210-655-1481, ext. 104 and 112 on Monday – Friday between the hours of 10am-3pm to verify if funds for free surgeries are still available and to schedule an appointment. Pet owners may also request an appointment by filling out the surgery request form at the bottom of this page. All pets must be current on the rabies vaccine and proof must be provided. If the pet is not vaccinated against rabies or proof is not provided, pets will be vaccinated by ADL and the pet owner will be charged $20 per rabies vaccination that is administered. Restrictions do apply and surgical appointments will be provided until all funding is exhausted. Pet owners who have further questions may call the ADL Hospital at 210-655-1481, ext. 104. View a copy of the flyer at FREE S/N SURGERIES!

Parasite Prevention Sales, Pet Wellness Exams, Dog Heartworm Test and Cat Combo Test:

ADL will be offering a $10 physical exam and $25 Heartworm test for owned dogs (ONLY for dogs over 6 months of age) and a $10 physical exam and $25 combo test for owned cats on specific days. ADL will also provide a one year prescription, valid ONLY at ADL, to pet owners whose dogs’ heartworm test is negative as well as for cats that are brought to us. The one year prescription is only valid for the purchase of Heartgard, Nexgard and Revolution from the Animal Defense League shelter. During these days/times, pet owners may also obtain required and recommended vaccinations for your cats and dogs as well as de-wormers to rid them of internal parasites. See the services to be offered below as well as fees for them. The wellness clinic days and times will be as follows: Tuesdays and Thursdays: 3:00-4:30pm and Saturdays: 10:30am-12:00pm.

Rabies Vaccination $20 Rabies Vaccination $20
Booster (RDAPP) $25 Booster (FVRCP) $20
Bordetella $20 Combo Test $25
Heartworm Test $25 Dewormer $20
Dewormer $20  Exam  $10
Exam $10

Please contact the ADL Hospital for full details: 210-655-1481, ext. 104 or download a copy of the Parasite Preventative Flyer to view days, times and complete details! To view the fees of prevention products sold at ADL (like Heartgard), view our Parasite Products Flyer.

Feline Fridays: Special Spay/Neuter Days for Owned Cats and Feral Cats:

In an effort to help control the overpopulation of animals in our community, the Animal Defense League has designed a special program, Feline Fridays, by spaying and neutering our community’s owned and feral cats. The first 30 owned cats by appointment and 30 feral cats will be accepted for surgery on each specific Feline Friday Day; 60 cats in all! 

For Owned Cats: The first 30 owned cats with a previously made appointment with ADL will be accepted. Please call 210-655-1481, ext. 104 or 112 to schedule an appointment. All pets must be in a humane carrier. These fees will apply for owned cats: $50 for Males and $70 for Females. A rabies vaccine or proof that your cat has been vaccinated against rabies will be required prior to the cat being taken in for surgery. If the pet is not vaccinated against rabies or proof is not provided, pets will be vaccinated by ADL and the pet owner will be charged $20 per rabies vaccination that is administered. The first 30 owned cats, with an appointment, will be accepted between 7am and 9am.  Pickup occurs on the same day between 4pm and 5pm.

For Feral Cats: The first 30 feral cats will be accepted on a first come first served basis. All surgeries include a rabies vaccine, with the price for male cats being $35.00 and for female cats $50.00. For individuals who have attended SAFCC’s TNR Class, the fee to sterilize a feral cat will be $20. ADL will verify all SAFCC attendees. If cats have a current rabies vaccine they will not be eligible for the feral cat surgery rate. Each cat or kitten must arrive in a humane trap (covered) and only one cat or kitten is allowed per trap.  The first 30 Feral cats will be accepted between 7am and 9am.  Pickup occurs on the same day between 4pm and 5pm.

Feline Friday Dates for the remainder of the year (subject to change):
Occur Every Friday in Each Month: Limited to the first 30 owned cats by appointment and 30 feral cat.

Best Friends Animal Society provides vouchers for residents of zip codes: 78201, 207, 210, 213, 221, 223, 227, 228, 229, 237, 242, 245, 250, 251 that will qualify them for free spay and neuter services for outdoor stray cats. Please contact Thomas ( or Evelyn ( at 210-306-6126 for information on their services.

Other organizations who offer pet sterilization services:

Spay / Neuter Request Form

  • Do not feed your pet any type of food after 10pm the day before surgery; water is okay. Arrival time the day of surgery is between 7am and 9am. Pickup time will be between 4pm and 5pm the day of surgery. Proof of current rabies vaccination in the form of a vaccination certificate showing date given and re-vaccination date is required or a rabies vaccination will be administered and charged to the pet owner.