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| Complaint | Possible Medical Cause | Possible Behavioral Cause | |-----------|----------------------|----------------------------| | Aggression | Pain, hypothyroidism, brain tumor | Fear, territoriality, resource guarding | | House soiling (dogs/cats) | UTI, renal disease, diabetes | Incomplete housetraining, marking, anxiety | | Excessive vocalization | Hyperthyroidism (cats), cognitive decline | Separation anxiety, attention-seeking | | Compulsive behaviors | Neurologic disorders | Obsessive-compulsive disorder (e.g., tail chasing) |

Training veterinary students in animal behavior to ... - PubMed Zooskool.com LINK