| Observed Behavior | Possible Underlying Medical Cause | |------------------|-----------------------------------| | House-soiling in house-trained dog | UTI, diabetes, kidney disease, cognitive dysfunction | | Aggression when touched (previously friendly) | Orthopedic pain, dental abscess, hyperthyroidism (cats) | | Hiding, decreased appetite | Nausea, pain, fever, early organ failure | | Pacing, circling, vocalizing at night | Canine cognitive dysfunction, brain tumor, hypertension | | Excessive grooming (alopecia) | Atopic dermatitis, food allergy, psychogenic alopecia (less common) | | Pica (eating non-food items) | Anemia (pica for dirt/clay), GI disease, pancreatitis |
Key clinical rule: Any new or escalating behavior problem in a middle-aged or older animal warrants a thorough medical workup before assuming it is “behavioral.” | Observed Behavior | Possible Underlying Medical Cause
Historically, veterinary medicine focused primarily on physiological pathology, while behavior was left to trainers or owners. Today, a paradigm shift acknowledges that behavior is a vital sign. Abnormal behavior often precedes or accompanies physical illness. Conversely, chronic pain or endocrine disorders frequently manifest as behavioral changes (e.g., aggression, house-soiling, or apathy). This report synthesizes current knowledge on this synergy. Key clinical rule : Any new or escalating
Animal behavior is the scientific study of what animals do, including their interactions with each other, other species, and their environment. In veterinary science, behavior is not just an observation—it is a vital sign, as critical as temperature, pulse, and respiration. including their interactions with each other