Indoor cats live in human-designed environments that often fail to meet their territorial, cognitive and social needs — systematic enrichment dramatically improves indoor cat wellbeing.
Indoor cat welfare requires active environmental design because the indoor environment provides nothing analogous to the territory, prey and sensory richness of an outdoor cat's range. An unstimulated indoor cat in a featureless apartment is not a contented cat — it is a cognitively deprived animal expressing boredom through overeating, overgrooming and social withdrawal. Systematic enrichment — vertical territory, hiding places, foraging puzzles, regular interactive play, rotated novel objects — transforms this welfare state. The most common barrier is owner perception that the cat seems content because it is not obviously distressed. Contentment is the absence of negative states; positive welfare requires active provision of enriching stimuli.