I was going to tell you to listen for him when it is really quiet inthe house. That is what I used to do when Fluffer used to get out. All the searching in the world never found her but a quiet night and I usually we right to her. She was in the pantry once, In a storage closet eating luggage once and finally in my husbands dresser eating his very expensive jogging shorts. Ouch! She almost had to go away to boarding school that time.She was a regular escape artist.