The debate about outdoor versus indoor cat keeping involves important trade-offs between cat welfare, safety risks to outdoor cats, and impacts on wild prey species.
The question of whether cats should be kept indoors or allowed outdoor access involves genuine welfare tensions. Outdoor access allows cats to express natural hunting, exploring, and territorial behaviours and reduces risk of obesity and boredom-related problems. However, outdoor cats face significant mortality risks from road traffic, disease, and attacks. They also impose a measurable predation burden on wild bird and mammal populations. The optimal solution for most cats is enriched indoor environments with managed outdoor access options — catios, enclosed garden runs, or supervised free time — that provide natural behaviour opportunities without the full risk profile of unsupervised outdoor access.