Why house cats change their sleeping spots so often

Cats spend a good portion of their time sleeping or catnapping, so they can be choosy about their sleeping places. Instinct, however, drives them to change beds often. Photo: TNS

Dear Joan,

Agney, my eight-year-old female cat, finds a great place to sleep – pet bed, closet, blanket – and sleeps there for two to six months, then finds a new spot and never returns to the old. The deserted spots aren’t soiled. Why, besides because she’s a cat, does she do that?