Low Cost Vet Finder
By appointmentCheck if you qualifyPrices listed

Rio Grande Valley Humane Society Low-Cost Vaccine Clinic

County shelter · 18038 Garrett Rd, Harlingen, TX 78552

Checked Oct 21, 2026 on the clinic's website · How we check

The short version

Low-cost shots, microchips and flea and heartworm meds at a monthly clinic in Harlingen, 9am to 11:30am. Rabies shot is $13. You must register online first, and there are no refunds.

  • Appointment only, no walk-ins
  • Not for everyone: check who qualifies below
  • Prices are on their site (12 listed below)

Who can use it

For people who live in the Rio Grande Valley.

  • Pet must come with you to get shots or meds
  • Rabies shot: pets at least 3 months old
  • Dog DHPPV and Bordetella shots: at least 6 weeks old
  • Nexgard: dogs at least 4 lbs
  • Cat Revolution: over 8 weeks old and over 5 lbs
  • Heartworm meds need a printed negative heartworm test from the past 12 months
  • Meds are sold only in the right size for the weight you register
  • Only the pet you registered can be seen

How to get in

Register online. Sign-up opens at least 2 weeks before each clinic. You pick a time, but pets are still seen first come, first served. Walk-in microchips at the shelter need no appointment.

Email: admin@rgvhs.org

When

Vaccine clinic once a month, 9am to 11:30am. You must arrive in that window. Walk-in microchips at the shelter in the afternoon.

What it costs

Rabies vaccine$13
Rabies metal tag$11
Dog DHPPV vaccine$16
Dog Bordetella vaccine$16
Cat FVRCP vaccine$16
Dewormer$16
Microchip (at the clinic)$11
Microchip (walk-in at the shelter)$25
Dog flea and tick preventative, 1 month$26
Flea and tick preventative packages (dog or cat)$52-$156
Dog heartworm preventative, 1 month$7
Dog heartworm preventative packages$14-$42

What they do

  • rabies vaccine
  • dog DHPPV vaccine
  • dog Bordetella vaccine
  • cat FVRCP vaccine
  • dewormer
  • Tri-Heart heartworm preventative (dogs)
  • Nexgard flea and tick preventative (dogs)
  • Revolution flea/tick preventative (cats)
  • microchip
  • rabies metal tag
  • walk-in microchipping at the shelter

For dogs, cats.

Good to know

Cats must each be in their own carrier. Dogs and cats must ride inside the vehicle, not in a truck bed. No refunds or rescheduling if your pet misses the clinic. Call 956-556-5885 to check shelter hours before walking in for a microchip.

We read this on the provider's own website on Oct 21, 2026: rgvhs.org, rgvhs.org/monthly-clinic, rgvhs.org/walk-in-services, rgvhs.org/community-resources. Spot a mistake?

If this one is full

By appointmentRules apply

RGV Low Cost Spay & Neuter Clinic

Spay / neuter clinic · 500 E. Hackberry Ave, Suite 100-B, McAllen

Cat spay/neuter $89

Nonprofit spay and neuter clinic in McAllen, by appointment. Dogs $125, cats $89, with a non-refundable deposit to book. Drop off 7:30 to 8am, pick up 3 to 3:30pm.

Checked Oct 21, 2026 on the clinic's website

By appointmentCheck if you qualify

Palm Valley Animal Society Low-Cost Spay & Neuter Clinic

Spay / neuter clinic · 2451 N US Expressway 281, Edinburg

Cat spay/neuter $75

Three spay and neuter days each month in Edinburg for Rio Grande Valley residents. Cats from $75, dogs from $100. Sign-up opens at 10am on the 1st of each month and fills fast.

Checked Nov 3, 2026 on the clinic's website

By appointmentOpen to everyone

RGV Humane Society Spay/Neuter Clinic

Spay / neuter clinic

Cat spay/neuter $150

Spay and neuter clinic days run by the RGV Humane Society. Dogs $175, cats $150. The surgery site is announced before each clinic. Register online and pay when you drop off your pet.

Checked Oct 21, 2026 on the clinic's website

All 16 places in McAllen-Brownsville