Stress from incompatible multicat households is a significant and underrecognized welfare issue, causing chronic anxiety, disease, and behavioral problems in millions of cats worldwide.
Chronic stress in cats is not merely an inconvenience but a genuine welfare problem with physical health consequences. Cats living in persistent social conflict experience elevated cortisol, impaired immune function, and painful urinary tract inflammation. The inability to avoid a threatening companion or access resources without confrontation creates a form of inescapable stress. Many owners don't recognize the signs until a cat is obviously ill. The solution is usually not relinquishment but better environmental management - more space, resources, and careful introductions.