Inter-cat aggression in multi-cat households is a major cause of chronic stress, and management requires understanding feline social structures and resource provision.
Chronic inter-cat aggression creates continuous psychological stress in subordinate cats, manifesting in hiding, reduced activity, inappropriate elimination, and illness. The welfare harm of prolonged social stress is significant and cumulative. Management must address the root causes - insufficient space, resources, and escape routes - rather than simply separating cats during obvious conflicts.