Indoor cats face an underappreciated welfare challenge: the barren domestic environment fails to meet their behavioral and psychological needs, leading to stress, boredom, obesity, and behavioral problems that reduce quality of life.
Indoor cats in impoverished environments experience a form of chronic frustration that is rarely recognized as suffering. Their hunting drive - motivating predatory behavior multiple times daily in nature - is unmet in living rooms with no prey items. Territorial management instincts are frustrated in small apartments shared with incompatible cats or with insufficient vertical territory. The result is a population of billions of cats worldwide experiencing chronic behavioral frustration that manifests as over-grooming, inter-cat aggression, attention-seeking, destructive behavior, and stress-related illness. Because cats suppress distress signals, this suffering is largely invisible. The shift to recognizing indoor environmental poverty as a genuine welfare issue represents an important development in companion animal care.