Cats are often described as solitary — yet millions live in multi-cat households where social stress is a major but underrecognized welfare problem.
Multi-cat household welfare is an often-overlooked welfare issue affecting millions of cats. Many owners assume that cats naturally get along with each other, or that occasional hissing and swatting is normal and harmless. But chronic social stress from incompatible cat relationships or resource competition causes real welfare harm — elevated cortisol, immune suppression, stress-related illness, and persistent anxiety. The key welfare factors are often simple: adequate resources so that competition is minimized, sufficient vertical and horizontal territory so that cats can establish personal space, and careful management of introductions when new cats join the household. Recognizing chronic stress as a welfare problem rather than normal cat behavior is the first step.