Glossary

Trainer versus behaviorist

A trainer teaches skills and manners, while a behaviorist is trained to assess and treat problems such as fear and aggression.

Also called: trainer vs behaviorist, dog trainer or behaviorist, behavior consultant, veterinary behaviorist

Dog trainers teach skills such as sit, recall and loose-leash walking, and run classes for puppies and for pet owners. A behaviorist or behavior consultant works on behavior problems with an emotional cause, such as aggression, severe fear, compulsive behavior or separation anxiety.

In many countries, including the United States, both titles are unregulated, so anyone can use them. Look at credentials. Veterinary behaviorists are veterinarians with specialist training, and they can diagnose medical causes and prescribe medication. Certified applied animal behaviorists hold advanced degrees. Certified trainers and consultants complete courses and exams from independent bodies.

A veterinary exam is a good first step for any behavior change, as pain and illness can cause it. Ask any professional what methods they use, and avoid those who promise quick fixes or rely on fear or force.

Last reviewed November 8, 2026

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Related terms

Certified applied animal behaviorist A behavior specialist certified by the Animal Behavior Society, normally holding a doctorate and years of experience, who treats behavior problems. Force-free A training approach that avoids pain, fear and intimidation and teaches dogs with rewards, patience and good management. Reactivity A dog's exaggerated reaction, such as barking, lunging or freezing, to a trigger like other dogs, people or noises. Separation anxiety Real distress shown by a dog when left alone or away from a particular person, such as howling, destruction, pacing or house soiling.