Multi-cat households create chronic stress for some cats through resource competition and social incompatibility, with welfare solutions focused on resource provision and environmental modification.
Chronic stress in multi-cat households is a widespread and frequently overlooked welfare problem. Unlike overt fighting, social stress often manifests as subtle behavioral changes - reduced grooming, changed sleeping locations, reduced play, and increased hiding. Cats living in chronic social stress show elevated stress hormones, increased susceptibility to stress-related illnesses including FLUTD, and reduced quality of life. The problem is often invisible to owners who interpret the absence of fights as absence of conflict. Providing adequate resources and space to allow all cats to meet their needs without social competition is the most important welfare intervention for multi-cat households.