Cats staying more than two weeks in traditional shelter environments show progressive welfare decline, requiring active management strategies to maintain psychological health.
Shelter stress syndrome - progressive psychological deterioration in long-stay cats - causes genuine suffering that often makes cats appear 'difficult' or 'feral' to potential adopters, paradoxically reducing their adoption chances. Shelters have a welfare obligation both to meet minimum needs and to actively prevent deterioration in long-stay animals. The most welfare-positive interventions are systemic: foster networks to move cats out of shelters, behavior-centered enrichment, and community cat programs that prevent unnecessary surrender.