The debate over indoor versus outdoor cat keeping involves genuine welfare trade-offs that are poorly served by simplistic positions on either side.
The indoor-outdoor cat debate involves genuine welfare considerations on both sides that resist simple resolution. For wildlife conservation, the evidence for harm from free-ranging cats is robust and significant. For individual cat welfare, the question is more nuanced — indoor confinement without adequate enrichment creates real behavioral health problems, but outdoor access carries substantial mortality risks that are not in the cat's interest. The welfare synthesis is not "indoor is always better" but rather "indoor with excellent enrichment is better than outdoor, and indoor without enrichment may be worse than managed outdoor access." Catio enclosures, leash training, supervised access, and building indoor environments with sufficient complexity offer the most welfare-compatible compromise. The conservation dimension is not the cat's welfare problem but is a legitimate reason for human choices about management.