| Observed Behavior | Possible Medical Cause | |------------------|------------------------| | Dog suddenly growling when touched | Pain (orthopedic, back, ear) | | Cat hissing at housemates | Hyperthyroidism, dental pain | | House-soiling in dog | Urinary tract infection, diabetes | | House-soiling in cat | Cystitis, kidney disease, constipation | | Night-time restlessness | Canine cognitive dysfunction (dementia) | | Compulsive licking | Atopic dermatitis, GI disease (in dogs) | | Pica (eating non-food) | Anemia, exocrine pancreatic insufficiency, dietary deficiency |