The debate between indoor-only and outdoor-access cats involves balancing welfare benefits of outdoor enrichment against risks to cats and wildlife.
Completely indoor cats deprived of adequate enrichment experience boredom, obesity, and behavioral problems. Unrestricted outdoor access enriches cats but risks their health and causes significant wildlife mortality. The welfare solution is providing the enrichment benefits of outdoor access through managed systems - catios, supervised time, and leash walking - that balance cat wellbeing against wildlife protection and road safety.