In veterinary science, animals cannot verbalize their discomfort. Therefore, behavior serves as their primary language. A shift in an animal’s routine actions is frequently the very first indicator of an underlying medical condition. Pain and Illness Manifestation

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Modern veterinary clinics use behavioral insights to transform the patient experience:

: A sudden increase in aggression, hiding, or vocalization is often the first sign of underlying pain, such as arthritis, dental disease, or internal discomfort.

This separation often led to incomplete care. A cat urinating outside the litter box might have been treated repeatedly for a urinary tract infection (UTI) when the root cause was actually environmental stress or inter-cat aggression.