The intersection of animal behavior and veterinary science has emerged as one of the most critical fields in modern animal welfare, conservation, and companion animal care. By understanding why animals act the way they do, veterinary professionals can provide more accurate diagnoses, reduce patient stress, and strengthen the bond between humans and animals. The Evolutionary Link Between Behavior and Health

A sudden onset of irritability or aggression in an otherwise gentle dog is a classic indicator of localized or systemic pain. Conditions such as osteoarthritis, dental disease, or spinal discomfort frequently manifest as snapping when touched or resource guarding a comfortable resting spot. Lethargy and Withdrawal

: Broadly defined as any action an animal takes, whether solo or interacting with others, to secure food, ensure survival, or care for young [9, 13].