Furthermore, understanding normal vs. abnormal behavior is essential for welfare assessments in agricultural, zoo, and laboratory settings. Stereotypic behaviors (e.g., crib-biting in horses, pacing in bears, feather-plucking in parrots) are not vices but indicators of suboptimal environments and unmet behavioral needs. Animal behavior is not a separate discipline from veterinary science—it is its functional expression. A thorough physical exam treats the body, but understanding behavior treats the animal. As veterinary medicine continues to embrace behavioral science, it moves closer to its ideal: not just the absence of disease, but a state of complete physical, mental, and social well-being for the animals in our care.