Cats are not naturally gregarious and multi-cat households frequently generate chronic social stress unless carefully managed through resource provision, spatial design, and social compatibility assessment.
Multi-cat households are one of the most common sources of chronic, unrecognised welfare compromise in companion cats. Because cats mask stress and avoid confrontation rather than escalating to obvious fights, owners frequently miss the signs that their cats are living in a state of social tension. The welfare consequences — chronic cortisol elevation, suppressed immunity, FLUTD, over-grooming, and psychological distress — accumulate over years of unaddressed conflict. Resolving multi-cat stress requires both environmental redesign (resources, vertical space, hiding areas) and understanding feline social dynamics well enough to recognise tension before it becomes crisis. In some cases, rehoming one cat to reduce group size is the kindest welfare intervention available.