Me thinks that Bentley was very upset with you leaving. His normal schedule was probably also messed up.He is telling you that he was not happy with you leaving him like that! Try to get him back to his regular schedule=/start over as if he is a pup. Praise him when he goes outside and give him a treat. Someone else might have started it-but "monkey see,monkey do" so it has been said! I believe with patience, he will get back to normal.