Multi-cat households are a significant source of feline chronic stress, as cats are not naturally social and resource competition creates ongoing welfare harm.
The social needs of cats are fundamentally different from dogs: cats are not pack animals and many tolerate but do not enjoy the company of conspecifics. In multi-cat households, resource competition — over food, resting areas, litter boxes, and attention — can create chronic low-level stress that compromises immune function, mental health, and physical welfare without producing obvious signs of conflict. Cats in conflict often use subtle avoidance and intimidation rather than overt fighting. The welfare solution is primarily environmental: sufficient resources positioned in multiple locations throughout the home that no single cat can monopolise, vertical space that allows cats to express position hierarchically, and separate feeding that prevents resource guarding at meals. Owners who acquire multiple cats for human preference rather than cat welfare should ensure conditions support harmonious coexistence.