Overview of indoor cat environmental enrichment and its welfare benefits.
Indoor cat welfare depends on environmental design that enables natural behaviour expression. Cats need to climb, hide, stalk, forage, and have exclusive spaces. Inadequate environmental complexity causes stress, obesity, and behaviour problems in indoor cats. The five pillars of a healthy feline environment - safe space, multiple resources, play opportunity, positive human interaction, and respect for sensory ecology - provide a welfare framework for enrichment design.