The question of outdoor versus indoor cat keeping involves genuine welfare trade-offs between the risks of outdoor access and the enrichment it provides versus the welfare costs of indoor confinement.
Cat welfare balancing requires considering both safety and positive welfare. Outdoor access provides environmental enrichment, natural behaviour expression and mental stimulation that are difficult to replicate indoors. However, road mortality, cat fights, predation, disease and poisoning create welfare risks. Indoor enrichment through vertical space, play, puzzle feeders and social interaction can partially compensate for outdoor restriction. Individual cat temperament and local environment should guide decisions.