At Clark Animal Hospital, our staff provides a full spectrum of quality healthcare services for your pets.  We understand that your pets are a part of your family, and we will treat them as we would our own.

From routine examinations and vaccinations to complex cases, our team of veterinarians works collaboratively to provide your pet the best possible healthcare. For cases that would benefit from outside expertise, we maintain an active referral relationship with many of the areas board-certified specialty practices for advanced diagnostics, orthopedic surgery, oncology, cardiology, dermatology, dentistry, behavior, radiology, and ophthalmology.

Preventative Care

Our wellness and vaccination programs focus on preventative care and are designed to prevent disease and prolong the life of your pet.

We recommend annual wellness checks for all pets. Our veterinarians will conduct a complete physical examination to evaluate the health of your pet and will discuss which vaccinations are appropriate. We adhere to the American Animal Hospital Associations  recommendations regarding routine use of “core” vaccines while only reserving other “non-core” vaccines for patients at increased risk. This allows us to keep your pets well protected while minimizing any potential adverse side effects from unnecessary vaccinations.

During a wellness exam, we will test for internal parasites such as heartworms and intestinal parasites like roundworms, hookworms, and whipworms. We can provide the critical information and medications necessary to protect your pets from these serious threats. We will also check for external parasites such as fleas and ticks and will offer the most up-to-date information as well as the products needed to treat and control these infestations.

Nutrition for your pet involves evaluating the patient for existing health conditions so we can recommend the optimal diet to manage their health. We also evaluate their Body Condition Score (BCS) to keep them at or to achieve their ideal weight.

Aging pets may exhibit symptoms which are considered “due to age” by their owners, when in fact, they may be signs of conditions that can be helped or at least explained. The staff of Clark Animal Hospital does not regard age as a disease and offers many services to help geriatric pets through their later years. These services may include complete laboratory testing (for example, bloodwork, urinalysis, radiology/x-rays), surgery, dental prophylaxis, hospitalization and nursing care performed by licensed veterinary technicians, to name a few. We can also refer your pet to numerous veterinary specialists if needed.

Emergency Care

If an emergency occurs after our regular hours, our answering service can be reached at 314-968-1624.

If the problem involves a patient who recently had surgery or is currently being treated for an illness, the doctor on call will be paged and you will receive a call back. The current illness can include chronic problems such as diabetes or heart disease.

If the problem is a new issue such as a sudden onset of vomiting or diarrhea, or a traumatic injury, you will be referred to one of the following:

– The Animal Emergency Clinic-South at 9937 Big Bend Road at I-44 in Kirkwood (314-822-7600) next to QT.

– Midwest Veterinary Referral Center at 17497 N. Outer 40 Drive in Chesterfield (636-536-4991).

– Veterinary Specialist Service Emergency Center at 1021 Howard George Drive in Manchester (636-227-9400) off of Hwy 141.


For many pet owners, the top concern with their pet’s surgery is anesthesia and pain control. At Clark Animal Hospital, we utilize the safest injectable anesthetics for inducing anesthesia and then maintain appropriate level of anesthesia using Isoflurane or “gas” anesthesia for the duration of the surgery. Your veterinarian will select an anesthetic regime based on the age and health of your pet and the type of surgical procedure to be performed. Anesthetic and patient monitoring is performed by our licensed Registered Veterinary Technicians using pulse oximetry, capnography, and blood pressure monitors. This ensures the safest and most reliable means for helping your pet through surgery.


The collective experience of our six veterinarians is our best resource. This allows for our veterinarians to consult with one another and to provide assistance to one another for cases that require multiple surgeons.

All of our veterinarians perform soft tissue surgeries such as ovariohysterectomies (spays), castrations (neuters), and tumor excisions or exploratory surgeries. Orthopedic (bone and joint) surgeries can be performed on site by a visiting board-certified specialist or by referral to area specialty practices. When necessary, we will refer to area specialty practices if we feel their experience and access to advanced surgical equipment would provide the best possible outcome for your pet.

Every pet requires a full medical exam and preanesthetic blood work prior to having surgery. Most patients will be placed on IV catheters and fluids to support blood pressure during anesthetic procedures. Every animal is monitored by a licensed veterinary technician during anesthesia while the doctor performs surgical and dental care.

In addition, temperature, oxygen and cardiac monitors are all utilized to keep your pet as safe as possible.

For anesthetic procedures, we will require a 12 hour fast prior to anesthetization except in emergencies.

Most patients are dropped off early in the morning between 7:30 – 8 am and are released in the afternoon or evening for pet safety and owner convenience. Pets undergoing a spay will stay overnight with us and will be released the next morning or afternoon.

An after hours emergency number will be supplied for our postsurgical patients in case there are questions or concerns overnight or during during the weekend.

Radiology (X-Rays) and Ultrasonography

X-rays are extremely helpful for diagnosing your pet’s medical problems. For excellent x-ray image quality, Clark Animal Hospital utilizes a direct digital radiographic system. Digital radiology eliminates the need for x-ray film or film processing, and it produces an image much more quickly. Images can be enhanced and enlarged without having to retake them, reducing unnecessary exposure for your pet. Image files can also be easily saved and transmitted via e-mail for consultation with radiologists or other veterinary specialists.

Clark Animal Hospital also offers in-house ultrasonography services performed by board-certified radiologists, in conjunction with Veterinary Imaging Specialists.

Diagnostic Laboratory

Routine blood testing helps our veterinarians learn things about your pet’s health that cannot be spotted during routine wellness examinations. Our laboratory is capable of processing a number of tests, including complete blood counts, routine serum chemistries, electrolytes, urinalysis, fecal/parasite exams, and heartworm testing. This allows us to do any necessary pre-operative testing on the day of surgery, before a patient is anesthetized, so we can identify preexisting problems and avoid potential complications. For more extensive diagnostic testing, we utilize a national veterinary referral lab and many of the veterinary school diagnostic labs.


Endoscopy is often used when other tests such as blood work or x-rays do not provide the information needed to make a diagnosis. We have the ability to perform flexible gastrointestinal endoscopy which allows for minimally invasive examination of the gastrointestinal (stomach and bowels) system. Under general anesthesia, a flexible fiber optic scope can be passed through the mouth to allow visualization of the interior of the esophagus, stomach and upper small bowel. We can biopsy any abnormalities that are encountered and can frequently remove smaller foreign objects that may have been swallowed. In the case of large bowel problems, we can also perform colonoscopies. In most cases, after recovery from anesthesia, pets are able to go home the same day.


Dental scaling and polishing can be essential to maintaining the long-term health of your pet. At Clark Animal Hospital, we provide general veterinary dental care to keep your pet’s teeth clean and healthy.

Veterinary dentistry is quite different from the dentistry most people are familiar with. Dental services are normally performed while your pet is under general anesthesia. Oral examinations and evaluation of dental disease are performed by our veterinarians while scaling, polishing, and anesthetic monitoring are performed by our licensed, Registered Veterinary Technicians.


Unfortunately, many pets are lost or separated from their owners every day. Proper identification is essential to ensuring that your pet is safely returned home.

Microchipping has become a very popular and safe way to permanently identify your pet and you as the owner. Lost pets with microchips can have their information read via scanners at vet offices and shelters around the country, increasing the chances that your pet will be returned. Clark Animal Hospital recommends the Home Again pet recovery system, a simple and safe injection that gives your pet permanent identification. This microchip for dogs and cats offers the protection of a permanent ID that cannot be removed like a collar.

Nutrition and Prescription Diets

Our veterinarians are passionate about pet nutrition. From allergies to obesity – food and nutrition play a greater role in the health of a pet than most realize. It is our firm belief that choosing to understand your pet food options and choosing to feed a healthier food for your pet will make a difference.

For pets with special dietary needs, we offer Hill’s, IAMS, Purina and Royal Canin prescription diets (dry and canned) for both cats and dogs. Prescription diets are prescribed by our veterinarians and are based upon your pet’s individual nutritional and medical needs.


The Medications Your Pets Need

The pharmacy at Clark Animal Hospital carries a large inventory of medications for your pets. We regularly review and update the products we carry to ensure we have the best and newest medications available for our veterinary patients.

As experienced veterinarians, we recognize that not all pets can or will easily take medications. Many times your pet is too small for traditional human doses, or she may simply be unable or unwilling to take medication in its commercial form. Sometimes a change in the form of a medication (such as a transdermal gel) can help make administration easier. For this reason, we work with several compounding pharmacies.

Compounding is a pharmacy practice that creates customized medications or medication forms for a pet’s particular needs. Licensed pharmacists will work with our veterinarians to customize medication dosages and forms that best meet your pet’s needs. Whether it’s adding flavoring to make a liquid more palatable or changing a pill to a cream for easy application, compounding creates unique medicines for unique needs.

To request a refill for a current prescription, please call 314-966-2733 during our regular business hours or place an order any time online.