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Welcome to Windhorse Veterinary Clinic
Your Veterinarian in Spencer, SD

Call us at 605-246-2854
Pet Emergency? Call us right away at 605-246-2854


If you live in Spencer, Alexandria, Emery, Farmer, Epiphany, Howard, Mitchell, Salem or the surrounding area and need a trusted veterinarian to care for your pets – look no further. Dr. Teresa Roster is a licensed SD veterinarian, treating all types of pets. Your pets’ health and well being are very important to us, and we take every possible measure to give your animals the care they deserve.

Windhorse Veterinary Clinic is a full-service animal hospital and welcomes both emergency treatment cases as well as pet patients in need of routine medical, surgical, and dental care. Dr. Teresa Roster has years of experience treating serious conditions and offering regular pet wellness care. Beyond first-rate pet care, we make our clinic comfortable, kid-friendly, and calm, so your pet can relax in the waiting room and look forward to meeting our Spencer veterinarian.

We are happy to offer a number of resources that enable you to learn about how to take better care of your pets. Please feel free to browse our site, particularly the informational articles. The best veterinary care for animals is ongoing nutrition and problem prevention, so becoming knowledgeable about preventative pet care is essential to the ongoing success of your animal’s health. If you have any questions, call 605-246-2854 or email us and we'll promptly get back to you. Our Spencer veterinarian office is very easy to get to -- just check out the map below! We also welcome you to subscribe to our newsletter, which is created especially for South Dakota pet owners.

At Windhorse Veterinary Clinic, we treat your pets like the valued family members they are.

Dr. Teresa Roster
Spencer Veterinarian | Windhorse Veterinary Clinic | 605-246-2854

24868 SD HWY 25
Spencer, SD 57374

Meet Our Skilled Team

Learn Who We Are

  • Dr.
    Teresa Roster, DVM, CEVMM
    Medical Director

    Dr. Roster grew up in ND and knew from a young age that she wanted to be a veterinarian. Graduating from Kansas State Veterinary Teaching Hospital in 1993, was just the start of things to come. Dr. Roster worked in four other mixed animal practices through out SD before starting Windhorse Veterinary Clinic in 2002.

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  • Shanna Styles, RVT
    Veterinary Technician

    Shanna is our Veterinary Technician. She started with us in December of 2012. You might also get to visit with her on the phone. She fields many questions that our clients call in with. She attended NAU in Rapid City, SD and worked in two practices there before moving here to be closer to her family. She is married and has two young boys at home. No rest for her when she gets home at night!


Office Hours

Saturdays And Sundays Emergencies Only: Call The Clinic # 605-246-2854


8:30 AM-5:00 PM


8:30 AM-5:00 PM


8:30 AM-5:00 PM


8:30 AM-5:00 PM


8:30 AM-5:00 PM






  • "They are wonderful people and do excellent work and they care about your animals. I'm glad I have them as my vet. Thank u again with my pets."
    Elimae S.
  • "I cannot say enough on how much I appreciate the caring staff at Windhorse. My little dog, Libby, lost the use of her back legs. With the treatment she has received, she is walking again."
    Kathy Holm
  • "Great veterinarian, wonderful staff. Love the care they give to my 4 legged family members"
    Sue Arteberry

Featured Articles

  • Is Your Cat's Personality Influenced by Coat Color?

    Are orange cats friendlier than black ones? Coat color may play a role in personality. ...

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  • Can My Pet Get Depressed?

    Has your pet been a little moody lately? Find out if depression may be to blame. ...

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  • Could Those Sniffles Be a Symptom of the Feline Flu?

    Can you spot the signs of feline flu? ...

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  • Does My Pet Dream?

    Are humans the only mammals who dream? Find out if your pet experiences dreams and nightmares. ...

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  • What to Do If Your Pet Eats Grass

    Wondering what to do if your pet eats grass? Take a look at a few ideas. ...

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  • Bloat in Dogs

    Bloat may end your dog's life if you're not aware of the symptoms. ...

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  • Hypothyroidism

    Hypothyroidism is the natural deficiency of thyroid hormone and is the most common hormone imbalance of dogs. This deficiency is produced by several different mechanisms. The most common cause (at least 95% of cases) is immune destruction of the thyroid gland. It can also be caused by natural atrophy ...

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  • Feline Distemper

    Feline distemper or feline panleukopenia is a highly contagious viral disease of kittens and adult cats caused by the feline parvovirus. It is also called panleukopenia as it affects the bone marrow and causes low white blood cell counts. It is relatively common in unvaccinated cats and is often fatal, ...

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  • Bloat and Gastric Torsion

    Bloat and gastric torsion is a serious condition and your pet should be rushed to the emergency room if this occurs. Certain breeds of dogs with deep chests and narrow waists, such as hounds, bouvier des Flandres, or doberman pinschers are more susceptible to a syndrome of gastric torsion and bloat. This ...

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  • Arthritis

    The most common type of arthritis is osteoarthritis which can be due to wear and tear on joints from over use, aging, injury, or from an unstable joint such as which occurs with a ruptured ACL (anterior cruciate ligament) in the knee. The chronic form of this disease is called degenerative joint disease ...

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