Indoor cats live longer safer lives but require deliberate enrichment to meet hunting, climbing, hiding, and social needs that outdoor access would otherwise satisfy.
The welfare of indoor cats depends almost entirely on the intentional choices of their owners to provide environmental enrichment that compensates for the richness of outdoor environments. Without deliberate enrichment, indoor life can become a welfare deficit: reduced movement, absent hunting opportunity, and monotonous sensory experience accumulate into chronic boredom and stress. The consequences include overgrooming, inter-cat aggression, redirected aggression toward owners, obesity, and reduced quality of life. Effective enrichment does not require expensive equipment: a cardboard box provides hiding space, a fishing rod toy provides hunting simulation, rotating toys maintain novelty. The key is understanding cat behavioural needs well enough to address them systematically rather than assuming indoor safety is sufficient for welfare.