Play in cats is not mere entertainment but an expression of predatory motivation essential for psychological wellbeing. Understanding and meeting cats' play needs prevents frustration, stereotypic behaviour, and aggression.
Predatory play is not optional enrichment for cats but a core welfare need rooted in their evolutionary history as solitary hunters. Cats that cannot express their predatory motivation accumulate motivational frustration that manifests as redirected aggression, overgrooming, excessive vocalisation, or compulsive behaviours. The key welfare principle is that play should allow the complete predatory sequence: cats need to catch and 'kill' prey items, not just chase. Allowing cats to catch a wand toy at the end of play sessions, and providing items they can chew and disembowel (such as stuffed prey toys), satisfies the killing motivation that is frustrated when cats never 'win'. Play sessions that end with cats catching prey consistently produce calmer, less frustrated animals. For indoor cats, the provision of appropriate play is not a luxury but a fundamental welfare responsibility of the keeper.