Author: [Your Name/Institution] Date: [Current Date] Abstract Animal behavior is both a diagnostic tool and a therapeutic target in veterinary medicine. This paper reviews the bidirectional relationship between behavior and physical health, arguing that systematic behavioral assessment enhances disease detection, improves treatment compliance, and safeguards welfare. We discuss common behavioral indicators of pain, stress, and neurological dysfunction; the role of learning theory in managing veterinary fear; and evidence-based interventions for behavior-related pathologies such as separation anxiety and feline lower urinary tract disease. Finally, we propose a practical framework for incorporating behavioral screens into routine veterinary examinations. Integrating behavioral science into clinical practice is not an adjunct but a core competency for modern veterinary medicine.