Shelter cats face welfare challenges from the stress of unfamiliar environments, social isolation, inadequate hiding opportunities, and the cumulative effects of long-term shelter stays on behaviour and health.
Shelter cat welfare is primarily challenged by the mismatch between cats' territorial nature and the shared, unfamiliar shelter environment. Cats are obligate territory holders in the wild, and the inability to establish and defend a territory in a shelter causes chronic stress. High cortisol suppresses immune function, increasing susceptibility to upper respiratory infections that spread rapidly in shelter populations. Hiding boxes - one of the simplest welfare interventions - dramatically reduce stress indicators. Individual room housing rather than communal areas improves welfare for most cats. Foster programmes provide the best welfare outcomes for anxious cats awaiting permanent placement.