Outdoor cat enclosures (catios) provide cats with safe outdoor access that protects them from traffic and predators while protecting wildlife from cat predation. Good design maximizes welfare benefits for all.
Catios represent one of the most practical solutions to the indoor vs outdoor access dilemma for cat welfare. They provide genuine outdoor benefits - sunlight, natural sensory stimulation, fresh air, and behavioral complexity - while eliminating the primary risks of unsupervised outdoor access (vehicle strikes, predators, disease, and cat predation on wildlife). A well-designed catio that cats actively use and spend time in provides significant positive welfare benefits beyond the minimum baseline of indoor life. The welfare calculus strongly favors catios for cats living in areas with high traffic or predator risk, as the outdoor benefits are substantial while the risks are eliminated. Cost and space constraints are real barriers, but creative solutions from window boxes to modest garden runs are accessible for many cat owners.