The debate over indoor versus outdoor cat access involves genuine welfare trade-offs. Evidence-based approaches that maximize enrichment while managing risks support the best outcomes for individual cats.
Cats kept entirely indoors without adequate enrichment can develop behavioral problems including aggression, over-grooming, and depression - genuine welfare harms from environmental insufficiency. However, free-roaming outdoor access exposes cats to mortality risks that dramatically shorten their lives and cause suffering through disease, injury, and poisoning. The welfare-positive middle path provides safe outdoor access through catios, supervised walks, or enclosed garden systems combined with rich indoor environments. This approach addresses both individual cat welfare and the welfare of wildlife cats would otherwise kill.