Environmental design in multi-cat households significantly affects whether cats can coexist peacefully, with strategic resource placement, vertical territory, and retreat spaces determining welfare outcomes for all cats.
Multi-cat household welfare is shaped primarily by the physical environment provided, with good design capable of transforming chronically stressed, conflicted cats into relatively well-adjusted cohabitants. The investment in appropriate resources — multiple litter boxes, feeding stations, water sources, resting areas, and perches — is modest relative to the welfare benefit for all cats in the household. Chronic inter-cat conflict that goes unaddressed causes sustained psychological suffering and physical health consequences including idiopathic cystitis triggered by stress. Environmental enrichment alone cannot resolve all multi-cat conflict, but it is the essential foundation before any behavioral intervention.