Chessie is a spayed ten year old indoor calico. Sometimes she will wake us in the middle of the night, outside our bedroom door or in another room, with a series of loud meow cries. the next morning we find one of her ratty toy mice beside her while she sleeps or where the sound came from (like outside the bedroom door). Is this a maternal thing, maybe finding taking care of a kitten she never had? What would be other reasons for her doing this?