Cats are not truly social animals and multi-cat households require careful resource management and space design to prevent chronic social stress between incompatible or competing individuals.
Multi-cat households create welfare challenges because domestic cats retain their ancestors' solitary territorial psychology while being asked to share space with conspecific competitors. The result, in poorly managed multi-cat homes, is chronic social stress that may not be visible to owners who interpret the absence of overt fighting as harmony. Subtle signs including blocking access to resources, staring, and postural intimidation create an environment of chronic tension for subordinate cats. The welfare consequences include stress-related illness, inappropriate elimination, and long-term immune suppression. The management solution involves treating cats as individuals with territorial needs, providing sufficient resources at multiple locations, and creating enough vertical and horizontal space to allow avoidance behavior between incompatible cats.