Multi-cat households frequently create chronic stress for resident cats due to resource competition, social tension, and inadequate territory provision.
Multi-cat household stress is one of the most pervasive and underrecognized welfare problems in companion animals. The chronic, low-level stress of living with incompatible cats contributes to health problems including cystitis, stress-related immunosuppression, and behavioral issues including house soiling and aggression. Many owners interpret their cats as 'getting along' when they are actually avoiding each other - a coping strategy rather than harmony. The welfare responsibility extends beyond preventing overt aggression to creating conditions where cats can maintain adequate personal space and access to resources without competition.