For the most up-to-date peer-reviewed research, these journals are leading contributors: The Science of Animal Behavior and Welfare - Frontiers

A cat that begins urinating outside the litter box is not being "spiteful"—a concept dogs and cats do not possess. More often than not, that cat is suffering from or bladder stones. The pain and urgency associated with urination become subconsciously linked to the litter box, leading the animal to avoid it. Similarly, a dog that suddenly growls when touched may have developed osteoarthritis. To the owner, it looks like aggression; to a veterinary behaviorist, it is pain.

Animal behavior plays a crucial role in veterinary science, as it can be a key indicator of an animal's overall health and well-being. Behavioral changes can signal underlying medical issues, such as pain, anxiety, or neurological disorders. By understanding animal behavior, veterinarians can diagnose and treat conditions more effectively, improving treatment outcomes and enhancing animal welfare.