About a month ago our 3.5 year old cat began getting up at about 5AM and meowing and yowling. When one of us gets up and follows him he leads us to the basement door and obviously wants to go down there. We did not initially discourage this but now it has become a daily affair and we would like it to stop. The basement is my shop and office and during the day, the door is open and Toby and Dylan, our two cats come and go as they wish. Both of them spend a good deal of time with me when I am there working. Both of them also spend the night on our bed and have done so for years. About a year ago, they caught a mouse down there and every once in awhile one or the other will display some interest in the area where the mouse was found but it is far from a habit. We have tried a few things to discourage Toby's early rising such as locking him out of the bedroom when he howls or locking him in the laundry room. He usually howls for 15 or 20 minutes and then keeps quiet but by then our sleep is fairly well disturbed. Toby is a real bright cat and has learned a number of games and commands. We're a little stuck on how to change this morning habit and any suggestions would be greatly appreciated.