Veterinarians diagnose and treat illness and injury in animals

A veterinarian is a licensed professional who examines animals, runs diagnostic tests, prescribes medication, and performs surgery. Most work in private clinics treating dogs, cats, and small animals, though some specialize in large animals like horses and cattle, wildlife, or laboratory animals. The core work is the same across settings: listening to an owner describe symptoms, physically examining the animal, deciding what tests or imaging are needed, and then treating what they find.

Veterinarians also perform routine preventive care—vaccinations, dental cleanings, spaying and neutering—and counsel owners on nutrition, behavior, and disease prevention. In an emergency clinic, they stabilize critically ill or injured animals and decide whether surgery or intensive care is needed. In a research setting, they oversee the health and humane treatment of animals used in studies.

Key Takeaways

  • Veterinarians examine animals, order tests, prescribe medication, and perform surgery just as human doctors do, but for animals.
  • Most veterinarians work in private clinics seeing routine cases like vaccinations, dental work, and illness, though specialties exist in emergency medicine, surgery, and exotic animals.
  • Veterinarians must be licensed, which requires a four-year veterinary degree and passing a state licensing exam.
  • Beyond treating sick animals, veterinarians advise owners on prevention, nutrition, and behavior, and some work in public health or research.

What happens during a veterinary visit

When you bring an animal to a veterinarian, the visit follows a familiar pattern. The veterinarian asks about the animal's history, diet, behavior changes, and any symptoms you have noticed. They then perform a physical exam—checking the animal's weight, temperature, heart rate, and breathing, and palpating the abdomen and joints to feel for problems.

If the veterinarian suspects an infection, injury, or organ problem, they may order blood work, urinalysis, X-rays, ultrasound, or other imaging. Once they have enough information, they explain what they found and discuss treatment options. For a straightforward ear infection, that might be ear drops and antibiotics. For a torn ligament, it might be surgery followed by rest and physical therapy. For a senior dog with kidney disease, it might be a special diet and medication to slow decline.

Preventive visits—annual checkups and vaccinations—follow the same structure but focus on catching problems early and keeping the animal healthy. Veterinarians use these visits to discuss weight management, dental care, parasite prevention, and age-appropriate screening.

Common procedures veterinarians perform

Veterinarians perform a wide range of procedures in-clinic and in surgery. Routine procedures include nail trimming, ear cleaning, and dental scaling (cleaning tartar off teeth). Many also perform minor wound repair and abscess drainage without general anesthesia.

Under general anesthesia, veterinarians perform spaying and neutering, which are the most common surgical procedures. They also repair fractures, remove tumors, repair torn ligaments, remove foreign objects from the stomach or intestines, and perform cesarean sections in animals that cannot deliver naturally. Dental extractions, cyst removals, and hernia repairs are also standard. In emergency settings, veterinarians perform life-saving procedures like chest tube placement, blood transfusions, and emergency abdominal surgery.

The level of complexity varies by clinic. A small-animal clinic may handle routine surgeries and stabilization of emergencies before referring critical cases to a specialty hospital. A large referral center or university veterinary hospital may perform advanced orthopedic surgery, cancer treatment, and organ transplants.

Specialties within veterinary medicine

Just as human medicine has cardiologists and surgeons, veterinary medicine has specialists. A veterinary surgeon focuses on surgical procedures and may subspecialize in orthopedic surgery (bones and joints) or soft-tissue surgery (organs and tissues). A veterinary dentist performs root canals, extractions, and treats gum disease. An emergency and critical care veterinarian works in 24-hour hospitals treating trauma, poisoning, and life-threatening illness.

Other specialties include internal medicine (diagnosing complex diseases), dermatology (skin and ear conditions), oncology (cancer treatment), cardiology (heart disease), and exotic animal medicine (birds, reptiles, rabbits). Some veterinarians specialize in behavior and help owners manage aggression, anxiety, and destructive habits. Large-animal veterinarians focus on horses, cattle, and other farm animals, often traveling to farms to treat animals on-site.

How veterinarians decide on treatment

When a veterinarian diagnoses a problem, they present the owner with options and explain the pros and cons of each. For a young dog with a torn anterior cruciate ligament (ACL), they might discuss surgery to repair it versus conservative management with rest and medication. For an older cat with hyperthyroidism, they might discuss medication, radioactive iodine treatment, or surgery, each with different costs, side effects, and long-term outcomes.

Veterinarians also consider the animal's age, overall health, and the owner's financial situation and preferences. They cannot force treatment—the owner makes the final decision. A veterinarian's job is to explain what the animal needs, what the options are, and what to expect from each choice. If an owner cannot afford treatment, the veterinarian may suggest lower-cost alternatives or refer them to a low-cost clinic or animal welfare organization.

Veterinarians in public health and research

Not all veterinarians work in clinics. Some work for government agencies like the U.S. Department of Agriculture (USDA) or state health departments, inspecting farms and food production facilities to prevent disease spread and may support animal welfare. Others work in disease surveillance, tracking outbreaks of zoonotic diseases (illnesses that spread from animals to humans) like avian flu or rabies.

Veterinarians also work in research, overseeing the care and humane treatment of laboratory animals and ensuring that studies follow ethical guidelines. Some work in zoos and wildlife rehabilitation centers, treating exotic and wild animals. Others work in pharmaceutical companies developing new animal medications, or in food safety, ensuring that meat and dairy products are safe for human consumption.

Education and licensing requirements

Becoming a veterinarian requires a four-year Doctor of Veterinary Medicine (DVM) degree from an accredited veterinary school. Before explore to veterinary school, students typically complete undergraduate coursework in biology, chemistry, organic chemistry, physics, and biochemistry. Veterinary schools are competitive and usually require a minimum GPA and strong performance on the Graduate Record Examination (GRE).

After graduating, veterinarians must pass the North American Veterinary Licensing Examination (NAVLE) to become licensed. Each state has its own licensing requirements, though most recognize the NAVLE as the primary exam. Some veterinarians pursue additional training in a specialty through a residency program, which typically takes three to four years after the DVM degree.

Frequently Asked Questions

What is the difference between a veterinarian and a veterinary technician?

A veterinarian is a licensed doctor who diagnoses disease, prescribes medication, and performs surgery. A veterinary technician (or vet tech) is a trained assistant who works under the veterinarian's supervision, performing tasks like drawing blood, taking X-rays, assisting in surgery, and restraining animals during exams. Vet techs require a two-year associate degree or certificate program; veterinarians require a four-year DVM degree.

Can a veterinarian treat exotic animals like birds or reptiles?

Some veterinarians treat exotic animals, but not all clinics do. Exotic animal medicine requires specialized training and equipment. If your regular veterinarian does not treat the species you have, ask for a referral to a clinic that specializes in exotic animals. Many university veterinary hospitals and larger referral centers have exotic animal specialists.

What should I do if I cannot afford veterinary treatment?

If cost is a barrier, ask your veterinarian about payment plans or lower-cost treatment options. Many areas have low-cost clinics run by animal welfare organizations or veterinary schools that offer services at reduced rates. Some nonprofits also offer financial information for emergency or critical care. Your veterinarian can help you find resources in your area.

How often should I take my animal to the veterinarian?

Healthy adult animals typically need an annual checkup and vaccinations. Senior animals (usually age seven and older) and animals with chronic conditions may need visits twice a year or more often. Puppies and kittens need multiple visits in their first year for vaccinations and deworming. Your veterinarian will recommend a schedule based on your animal's age and health.

What happens if my animal needs emergency care after hours?

Most areas have 24-hour emergency veterinary clinics that operate when regular clinics are closed. If your animal is injured or seriously ill outside business hours, search online for "emergency vet near me" or call your regular veterinarian—their voicemail usually lists the local emergency clinic. Emergency care is more expensive than routine care, but it can save your animal's life.