Outdoor access provides cats with exercise and natural behaviour but exposes them to traffic, infectious disease, fights, and other welfare risks requiring management.
The outdoor-indoor cat welfare debate involves genuine trade-offs. Outdoor cats experience road casualties, fight injuries, infectious disease, and predation. Indoor cats experience boredom, obesity, and lower activity without appropriate enrichment. The welfare comparison depends entirely on how well each option is managed. Indoor-outdoor enclosures (catios) allow outdoor experience without road exposure. Traffic risk can be mitigated through reflective collars, microchipping, and garden fencing with cat-proof overhang.