The debate over indoor versus outdoor cat access involves complex welfare trade-offs between natural behavior expression and risks of injury, predation, and disease.
Cat welfare is best understood through both individual and population lenses. Individual cats may experience reduced behavioral frustration with outdoor access, but face substantially elevated injury and death risk. The welfare of wildlife killed by cats must also be weighed. Indoor enrichment has advanced significantly and can meet most behavioral needs when implemented thoughtfully. Catio enclosures and supervised outdoor time offer a compromise that supports cat welfare while protecting wildlife. The evidence favors indoor-primary lifestyles with robust enrichment.