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To understand the link between behavior and veterinary science, one must first understand the hypothalamic-pituitary-adrenal (HPA) axis. When an animal experiences fear or anxiety—say, the smell of a clinic’s antiseptic or the clang of a metal scale—its body floods with cortisol and adrenaline.

For decades, veterinary medicine focused primarily on the physical body—treating fractures, curing infections, and managing organ failure. However, a quiet revolution has taken place in clinics and research labs worldwide. Today, the top tier of veterinary science recognizes a fundamental truth: To understand the link between behavior and veterinary

Focuses on medicine and surgery; requires a doctoral degree in veterinary medicine. and managing organ failure. However