The main veterinary specialties and where they work

Veterinarians divide into a few broad categories based on the animals they treat and the setting where they work. The largest group is small animal veterinarians, who treat dogs, cats, rabbits, and other pets in private clinics. Large animal veterinarians work with horses, cattle, sheep, and pigs, usually on farms or at equine hospitals. Mixed animal veterinarians handle both small and large animals, typically in rural areas where a single practice serves the whole community. Beyond these, you'll find specialists who focus on a single species, a specific body system, or a particular type of work — from zoo medicine to research to food safety.

The path to any veterinary role starts the same way: a four-year Doctor of Veterinary Medicine (DVM) degree from an accredited school. After that, a veterinarian can enter general practice when ready or pursue additional training in a specialty, which usually takes two to four more years. Some specialties require board certification through an exam; others do not. The type of veterinarian you need depends on what animal you have and what kind of care it requires.

Key Takeaways

  • Small animal veterinarians treat pets in clinics and are the most common type; large animal veterinarians work with farm animals and horses, usually traveling to the animal's location.
  • Specialists exist in areas like surgery, dermatology, cardiology, and dentistry, and they typically require a referral from a general veterinarian.
  • Emergency and critical care veterinarians staff 24-hour animal hospitals and handle trauma, poisoning, and life-threatening conditions.
  • Exotic animal veterinarians work with birds, reptiles, and small mammals and often require additional training beyond the DVM.
  • Veterinarians also work in research, public health, food inspection, and zoo settings, roles that do not involve treating individual animals.

Small animal veterinarians and general practice

Small animal veterinarians make up the bulk of the profession and are what most pet owners encounter. They work in private clinics, animal hospitals, and veterinary chains, seeing dogs, cats, rabbits, ferrets, and similar pets. Their work includes routine exams, vaccinations, dental cleaning, spaying and neutering, diagnosis of illness, and management of chronic conditions like diabetes or arthritis. Most small animal practices are open during business hours, Monday through Friday, with some offering Saturday appointments.

A small animal veterinarian is a generalist, meaning they handle a wide range of conditions and species. If a case falls outside their comfort zone — a complex orthopedic surgery, a rare skin disease, or an exotic bird — they refer the owner to a specialist. The relationship is often long-term; many pet owners see the same veterinarian for years and develop a working relationship around their animal's health history.

Large animal and equine veterinarians

Large animal veterinarians work with horses, cattle, sheep, goats, pigs, and other farm animals. Unlike small animal practice, they travel to the animal's location — a farm, ranch, or equine facility — rather than seeing animals in a clinic. Their work includes routine herd health management, vaccinations, reproductive services, lameness evaluation, and treatment of acute illness or injury. Many large animal veterinarians specialize further in either equine (horse) medicine or food animal medicine.

Equine veterinarians focus exclusively on horses and may work with racing stables, breeding farms, or private owners. They handle everything from routine dental care and lameness exams to complex surgical procedures. Food animal veterinarians work with cattle, sheep, and pigs and often focus on herd productivity, disease prevention, and food safety. Large animal practice is physically demanding and requires comfort with large, powerful animals and outdoor work in all weather.

Surgical and internal medicine specialists

Surgical specialists perform complex procedures that general veterinarians do not routinely do. These include orthopedic surgery (bone and joint repair), soft tissue surgery (abdominal and thoracic procedures), and neurosurgery. A surgical specialist completes a residency in surgery after the DVM and often pursues board certification through the American College of Veterinary Surgeons (ACVS). They work in referral hospitals and see cases sent by general practitioners.

Internal medicine specialists diagnose and manage diseases of the organs and body systems — the heart, lungs, kidneys, liver, and digestive tract. They perform advanced diagnostics like ultrasound and endoscopy and manage complex medical cases. Other common specialties include cardiology (heart disease), oncology (cancer), and nephrology (kidney disease). All of these require a residency and board certification. A general veterinarian refers a case to a specialist when the diagnosis is unclear, the condition is severe, or the treatment is beyond their scope.

Emergency and critical care veterinarians

Emergency veterinarians staff 24-hour animal hospitals and handle acute, life-threatening conditions. These include trauma from accidents, poisoning, severe infections, bloat, difficulty breathing, and uncontrolled bleeding. They stabilize the animal, run diagnostics, and provide when ready treatment. Many emergency hospitals also have a critical care unit for animals recovering from surgery or managing severe illness over multiple days.

Emergency medicine is a specialty that requires additional training and board certification through the American College of Veterinary Emergency and Critical Care (ACVECC). The work is unpredictable, high-stress, and often involves animals in severe pain or distress. Emergency veterinarians work nights, weekends, and holidays, and they frequently coordinate with specialists — calling in a surgeon for a ruptured spleen or an internist for a septic animal.

Exotic animal and specialty veterinarians

Exotic animal veterinarians treat birds, reptiles, small mammals (rabbits, guinea pigs, ferrets), and other non-traditional pets. This specialty requires additional training beyond the DVM because exotic animals have very different anatomy, physiology, and behavior than dogs and cats. An exotic veterinarian must understand the specific needs of each species — the temperature and humidity requirements of a bearded dragon, the dietary needs of a parrot, the social structure of a rabbit colony.

Other specialty veterinarians focus on specific body systems or conditions. Dermatologists treat skin disease, which is common in dogs and cats. Dentists perform cleanings, extractions, and treatment of dental disease. Ophthalmologists diagnose and treat eye disease. Behaviorists work with animals that have behavioral problems — aggression, anxiety, or destructive behavior — and may prescribe medication or recommend training. These specialists typically work in referral hospitals or specialty clinics and see cases by referral only.

Veterinarians in research, public health, and food safety

Not all veterinarians treat individual animals. Research veterinarians work in laboratories and universities, studying disease, developing new treatments, or testing drugs and medical devices. They may oversee animal care in research facilities or conduct their own research on animal health. Public health veterinarians work for government agencies like the CDC or state health departments, tracking disease outbreaks, monitoring food safety, and protecting human health from animal-related risks.

Food safety veterinarians work in slaughterhouses, processing plants, and regulatory agencies, inspecting meat and poultry for disease and contamination. Zoo veterinarians care for wild and exotic animals in zoos and wildlife facilities, managing health, reproduction, and conservation programs. Veterinarians also work in pharmaceutical companies, developing and testing animal medications, and in industry, managing health and welfare standards for animals raised for food or fiber. These roles require the DVM but do not involve the day-to-day clinical work of treating sick animals.

Frequently Asked Questions

Do I need a referral to see a veterinary specialist?

Most specialists require a referral from a general veterinarian, though some will see animals without one if you call and explain the situation. The referral is not a legal requirement but a professional courtesy that ensures the specialist has the animal's medical history and understands why the owner is seeking specialized care. Your general veterinarian can provide the referral and send medical records directly to the specialist.

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

A veterinarian holds a Doctor of Veterinary Medicine (DVM) degree and is licensed to diagnose disease, prescribe medication, and perform surgery. A veterinary technician completes a two-year or four-year program and works under the supervision of a veterinarian, performing tasks like drawing blood, taking X-rays, assisting in surgery, and administering medication. Technicians cannot diagnose or prescribe independently.

How do I find a veterinarian who treats my type of animal?

For common pets, search online for "veterinarian near me" or ask your local animal shelter for recommendations. For exotic animals, search for "exotic animal veterinarian" plus your location, or contact the Association of Exotic Mammal Veterinarians or the Association of Avian Veterinarians for a referral. For large animals, ask local farmers or horse owners, or contact your state veterinary medical association.

Can a small animal veterinarian treat a rabbit or guinea pig?

Some small animal veterinarians have experience with rabbits and guinea pigs, but not all do. Many have training only in dogs and cats. Before scheduling, call and ask whether the clinic treats the species you have and whether the veterinarian has specific experience with it. If they do not, ask for a referral to an exotic animal veterinarian or a small animal clinic that does.