Research overview: sleep, rest and the interpretation of inactivity in captive cats

Cats naturally rest and sleep for much of the day, which complicates welfare interpretation because inactivity can reflect either healthy, contented rest or boredom, depression and learned helplessness. This overview surveys research on felid activity budgets and rest: normal species-typical inactivity patterns, how to distinguish relaxed rest from withdrawn, apathetic inactivity, the role of comfortable, secure, varied resting sites in supporting good rest, and how disturbance, discomfort or stress disrupt sleep. It examines the welfare significance of providing quiet, safe, elevated and thermally appropriate places to rest, and the challenge of assessing welfare in an animal that is meant to be inactive much of the time. The synthesis frames careful interpretation of rest versus apathy as an important and subtle aspect of felid welfare assessment.