Trap-neuter-return (TNR) programs for feral cats are widely practiced but contested. Understanding the welfare implications for colony cats and wildlife is essential for informed policy decisions.
TNR programs are genuinely welfare-positive for the cats they target, reducing fighting injuries, reproductive stress, and sexually transmitted diseases while stabilizing colony populations. However, feral cats face ongoing welfare challenges from harsh weather, traffic, predation, and disease. Their impact on wildlife, particularly birds, creates a conflict between feral cat welfare and wild animal welfare. Complete solutions require both TNR to manage existing populations and strategies to reduce new outdoor cat populations. The welfare of both feral cats and the wildlife they kill deserves consideration in any humane policy.