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Welcome to Tri County Veterinary Service

Your Veterinarian in Earlville,IL, Sandwich, IL, Somonauk, IL

For immediate services and emergencies call (815) 246-9545!

Image of a dog wearing a stethoscope

If you live in Earlville or the surrounding area, especially Sandwich or Somonauk, and need a trusted veterinarian to care for your pets – look no further. Dr. Kevin Zollars is a licensed IL veterinarian, treating all types of pets. Your pets’ health and wellbeing are very important to us, and we take every possible measure to give your animals the care they deserve.

Tri County Veterinary Service 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. Kevin Zollars 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 Earlville 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 (815) 246-9545 or email us and we'll promptly get back to you. Our Earlville 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 pet owners.

At Tri County Veterinary Service, we treat your pets like the valued family members they are.

Dr. Kevin Zollars
Earlville Veterinarian | Tri County Veterinary Service | (815) 246-9545

920 S Greenbriar
PO Box 360
Earlville, IL 60518

Meet Our Doctor

  • Dr.
    Kevin Zollars


Find us on the map

Office Hours

Available 24 Hours - call (815) 246-9545

Earlville Office


8:00 am-5:00 pm


8:00 am-5:00 pm


8:00 am-5:00 pm


8:00 am-8:00 pm


8:00 am-5:00 pm


8:00 am-12:00 pm




Read What Our Clients Say

  • "While traveling across the country this summer, my 3 pound chihuahua had to be seen on an emergency basis. A sick dog that small can not wait long to be seen. A desk clerk from the KOA we were staying in recommended Dr. Zollars. Dr. Zollars and staff were awesome. My dog was seen immediately with great care and treatment. My fears were put to ease. So glad Dr. Zollars was recommended. Can't thank them enough. He even called later to make sure my dog was doing better and let him know if we needed anything while on the road."
    Debra Lewis
  • "Doc Zollars is the best! He and all the staff at Tri-County have been nothing less than excellent and so compassionate in caring for my dogs! I would recommend him to everyone."
    Brigitte Klein
  • "Worth my drive ...Gunner got a steroid injection treatment for his Lipoma and seems more comfy tonight. Called this morning and seen by this afternoon. Very attentive."
    Becky McGava Nelson
  • "What a find!! Decided to give Dr. Zollars a try acyrr a friend made the recommendation and I'm so happy were did. His facility is clean, staff is friendly and the time he took to talk with us was more than expected. Will definitely be sharing my wonderful experience with everyone I can."
    Jennifer Troyan
  • "Best decision I made to bring Jasper there! Kevin and his staff are truly wonderful!"
    Mari L. West
  • "Dr. Kevin Zollars is awesome. I had issues with my homing pigeons and he helped me immensely. Thank you!"
    Mark Maurer

Featured Articles

Read about interesting topics

  • Fish

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  • Caring for Your Horse

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  • Cushing's Disease (PPID)

    Cushing’s disease (also known as pituitary pars intermedia dysfunction, or PPID) is the most common disease affecting the endocrine system of horses. This group of glands produces hormones that help keep the body in balance. With Cushing’s disease, an imbalance of these hormones causes several symptoms, ...

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  • Cryptochidism

    Cryptorchidism is a condition in which one or both testicles fail to descend into the scrotum. This is the most common problem affecting the sexual development of male horses. If both of the testicles remain in the abdomen, the horse will be sterile. Horses with an undescended testicle are sometimes ...

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  • Congential Defects and Disorders

    Horses with congenital disorders are born with physical or physiological abnormalities. These may be readily apparent, or may be diagnosed as the foal matures. Unfortunately, the list of possible congenital deformities is long. These anomalies may affect the heart, ears, eyes or skin. The autoimmune, ...

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  • Cancer in Horses

    While cancer is not as prevalent in horses as it is in humans, horses do get several types of this disease. Here are a few of the common types of cancer that a horse might develop. Melanoma Gray horses over the age of 15 are the likeliest candidates to get melanoma. Melanoma tumors originate from cells ...

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  • Bucked Shins

    Bucked shins is the common name for very small fractures on the front part (periosteum) of a horse’s cannon bones. These bones are on the lower part of the leg, and run between the knee and the fetlock joint below. Symptoms of Bucked Shins Bucked shins are more common in 2- to 3-year-old Thoroughbreds ...

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  • Breeding

    Breeding horses is a complicated topic, but this quick overview will provide you with enough information to talk with a breeder or your veterinarian about breeding your horse. Role of the Stallion A stallion is a male horse that has not been castrated. The stallion’s role in breeding is to provide ...

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  • Barns to Pastureland

    If you are to get the best from your horse, it is vital that you provide him with a happy, comfortable and safe home environment. This applies whether he is kept in a horse barn or in a field. As a general rule, a particularly fine-coated horse, or one that is in hard work, needs to be stabled during ...

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  • Bacterial Infections

    There are many types of bacterial infections that can affect your horse. If you notice symptoms of any of the following common types of bacterial infections, contact us, so we can examine your horse and provide appropriate treatment options. Anthrax is a bacterium that forms spores, which allows it to ...

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