For any sudden behavior change, the veterinary protocol is now clear:
A cat urinating outside its litter box is rarely acting out of "spite." Frequently, this behavior indicates a painful lower urinary tract infection (LUTI) or feline interstitial cystitis. For any sudden behavior change, the veterinary protocol
When a dog or cat experiences fear or anxiety in a veterinary setting, their body releases cortisol, epinephrine, and norepinephrine. This "sympathetic storm" has direct consequences on diagnostics: Physical illness directly alters behavior
Veterinary science and animal behavior intersect to provide holistic care. Physical illness directly alters behavior, and psychological stress can cause or worsen physical disease. For any sudden behavior change
In the end, the question is not whether a dog is "good" or "bad," or whether a cat is "mean" or "loving." The question is: What is this behavior telling us about the biology beneath the fur? Answering that question is the single most powerful tool in modern veterinary practice.