Shelter environments cause significant stress for cats, with welfare consequences that also reduce adoption rates and worsen outcomes.
The shelter environment is fundamentally stressful for cats, who are territorial animals for whom a novel, noise-filled, unfamiliar space represents a threatening situation. Chronic stress in shelters causes immune suppression, increases respiratory disease transmission, and produces behavioral changes — hiding, aggression, reduced social behavior — that reduce adoptability in a cruel cycle. Low-cost welfare interventions including hiding boxes, feliway diffusers, visual barriers between cages, and reduced noise have strong evidence for reducing stress indicators. Foster care is the most transformative welfare intervention as it removes cats from the inherently stressful shelter environment while maintaining placement capacity.