The debate around keeping cats indoors versus allowing outdoor access involves genuine welfare trade-offs — outdoor cats face mortality and injury risks while indoor cats face wellbeing risks from under-stimulation.
The indoor-outdoor debate involves real welfare values in genuine tension. Outdoor access provides cats with environmental complexity, physical challenge, and sensory stimulation that indoor environments struggle to replicate. But the mortality risk of free-roaming access in urban and suburban environments is also real. A cat killed by a vehicle at four years has experienced a welfare harm regardless of the quality of its outdoor life. The welfare-maximising solution for most cats is neither pure indoor confinement nor unrestricted outdoor access, but carefully designed managed access — catios, harness training, and secure garden spaces are practical tools for achieving this balance.