Immunization and Wellness Care

We strive to prevent illness whenever possible. The time and effort invested in wellness programs are designed specifically for your pet. Our wellness package includes a comprehensive physical exam, internal parasite test, heartworm test, and vaccinations. We also offer spay and neuter packages, as well as comprehensive blood tests for all life stages. Our new Partners in Wellness plans offer basic annual wellness plus much more for a low monthly rate. Save money while getting your pet the best care

Internal Medicine

We cover all area of internal medicine, including cardiology, ophthalmology, neurology, dermatology, gastroenterology, oncology and endocrinology to name a few. We also have a large sterile surgery room where we perform spays and neuters as well as mass removals, exploratory, c-sections, and orthopedic surgery.

Boarding and Day Boarding

Pets are like our children- we feed them, nurture them, and lavish them with attention. Our highly qualified kennel attendants do the same when you can't be there. We provide tender loving care, such as brushing and cuddling as well as outdoor playtime three times a day to keep them happy and active. We also offer day boarding for clients who need a place for their pets just during the day. We offer multiple pet discounts for boarding, and if you board five nights your pet will receive a complimentary bath and nail trim.

Baths and Nail Trims

Treat your pet to a luxurious bath. Our special, cleansing baths remove dirt, debris, and doggie odor- your pet will feel refreshed and revitalized. We use Aloe and Oatmeal shampoo which does not affect topical flea preventative (provided it was applied over 24 hours ago), and helps control dry skin. If your pet is scratching our medicated baths contain soothing agents that stop the itch. Bath services also include a nail trim.

Laser Therapy

How does it work? Laser therapy stimulates the body to heal from within. Non-thermal photons of light are administered to the body for about 3 to 8 minutes and absorbed by the injured cells. The cells are then stimulated and respond with a higher rate of metabolism. This results in relief from pain, increased circulation, reduced inflammation, and an acceleration of healing process. Click the image to learn more.

Small Exotic Medicine

Small exotics are becoming more and more popular. Our veterinarian sees rabbits, ferrets, sugar gliders, rats, hamsters, guinea pigs, and hedgehogs. While ferrets do require the rabies vaccination, the others do not. We offer wellness checks for all of them and can care for them when they are sick. We do not see primates.

Reptile Medicine

Reptiles also require different care than our furry friends. Our staff is well versed in the care of reptiles, including snakes, chameleons, geckos, and iguanas. While they do not need yearly visits or vaccinations, they can get sick. When that happens, we are here to make them better.

Pain Management

Veterinary patients feel pain and discomfort under the same circumstances as people do. We know that recognizing and alleviating pain in animals is the essence of good patient care. All of our surgical procedures and dental packages include pain medication for the first few days at home. While most procedures are in and out the same day, we want our care of the animal to continue even when they are not in the office. We also offer pain management for injuries as well as for our arthritic companions.

Dental Procedures

Regular professional cleaning is important to maintaining your pet?s teeth. We use modern and safe ultrasonic to clean each tooth thoroughly- above and below the gum lines. Dental technicians polish teeth to create a smooth, lustrous tooth surface which helps prevent plaque build up. Fluoride treatments help strengthen enamel and reduce tooth sensitivity. The dental procedure does require the dog to be put under anesthesia so we always perform pre-surgical blood work prior to the procedure.


Microchips have helped reunite thousands of pets with their families. While name and rabies tags can also be helpful in returning your pet to you, they can come off but microchips cannot. We offer the most widely used microchip products to increase the chances of a safe recovery. You can check out the Home Again website at


Our clinic offers digital x-rays to assist our veterinarian and staff in evaluating musculoskeletal, cardiovascular(cardiopulmonary), gastrointestinal, reproductive, and urinary systems. We perform OFA certification x-rays, which are sent to a specialist for evaluation, as well as general x-rays included in the geriatric wellness package.


Some pets require special foods, and all pets benefit from a balanced diet. There are so many different foods available to pets today, and walking down any pet food aisle can be daunting. Our staff is available to help you choose the best diet based on your pets? needs to keep them happy, healthy, and active.

Hospice and Euthanasia

Saying goodbye to a long time friend is painful. We work with clients to ensure their pets comfort and dignity. We offer a cremation serivce through Resthaven for those who prefer that option.

Emergency Care

In an emergency, seconds count. Our experienced staff is backed by our mobile resuscitation unit, stocked and equipped to administer the ABC?s of basic life support ? Airway, Breathing, and Circulation/Cardiac Compressions. Emergency care is only offered during regular business hours. If an emergency occurs after 5:30pm or before 7:30am we refer our clients to the Animal Emergency and Specialty Center on Kingston Pike. Their number is 865. 694.4440.


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Office Hours

Our Regular Schedule


8:30 am-1:00 pm

2:00 pm-5:00 pm


8:30 am-1:00 pm

2:00 pm-5:00 pm


8:30 am-1:00 pm

2:00 pm-5:00 pm


8:30 am-1:00 pm

2:00 pm-5:00 pm


8:30 am-1:00 pm

2:00 pm-5:00 pm






Read What Our Clients Say

  • "I love Callahan Drive Animal Hospital! Best Veterinarian & Staff in Knoxville been going here for 15 years ! Only place I trust with my fur babies ! Everyone is helpful and friendly and they really care about your animals highly recommend !"
    Tracy S.
  • "Took my 3 y/o tortoise recently and I was pleasantly surprised. Not only was the vet knowledgeable and kind, but the overall visit (including an x-ray) was reasonably priced. I definitely recommend and I will be returning for future services"
    Valerie B.
  • "This group loves animals! Everyone is so kind and helpful! This Vet loves sharing information too! Wouldn’t go anywhere else!"
    Karen W.
  • "This is the best vet I’ve ever took my dog to I couldn’t see myself going anywhere else they took very good care of my son and I feel so much better knowing exactly what’s wrong with him very very sweet staff thank you soooooooo much Dr.Hilla and staff"
    Diane J.
  • "Doc Villa ALWAYS takes care of Studly Dudley!! I will ALWAYS recommend Callahan Drive Animal Hospital & their entire team as they truly do care for your animal in the same way you do!! Dr Villa has cared for Dudley for most of his SIXTEEN years & he’s still happy, healthy & strong!! I strongly believe, Stud has made it to this old age so gracefully due to the care he’s been given with this facility!! I would not trust another team than Callahan Animal with my “first child”, the only place for us to go!! Highly recommended!!"
    Lauren H.
  • "10/10 experience was even better than hoped for. As a snake owner, you hear things about vets that make you question taking them and it was very comforting and nice to have someone who not only helped but took the time to talk about caring for them properly. Thank you guys so much!"
    Lydia B