Tri-County Veterinary Services
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We have two doctors, Dr. Jeff Garner and Dr. Elizabeth Zwillenberg. Tri-County is open M-Thur 8am to 3pm, Fri. 8am to 2 pm, and one Saturday of each month from 8am to 2pm. For Small Animal Emergencies please see the following clinics information:
Emergency Animal Hospital of Collin County ~ Phone: (214) 547-9900
Grayson County Animal Emergency Clinic ~ 903-337-0898
Northeast Texas Emergency Vet Services ~ 903-454-9488
04/29/2025
April was National Heartworm Awareness Month, a perfect time to discuss heartworm prevention with your veterinarian. It’s especially important to be proactive about protecting pets in Texas, where the vehicle for heartworm disease—mosquitoes—runs rampant. Preventing heartworms is far easier, safer and more affordable than treating the disease, so partner with your veterinarian to protect your pet now.
Pet Heartworm Facts, Treatment, and Prevention in Dogs & Cats Heartworms disease can affect dogs and cats, among other pets. Know more about this deadly disease and how to prevent your beloved pet from catching it.
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Opening Hours
| Monday | 8am - 3pm |
| Tuesday | 8am - 3pm |
| Wednesday | 8am - 3pm |
| Thursday | 8am - 3pm |
| Friday | 8am - 2pm |
