I guess my kitties' alarm clocks are broken, because mine never do that. However, my boyfriend's Tuxedo, Buddy, is like clockwork in that department. Every morning at 6:30, he takes on claw, and only one, and gigs him on the arm ever-so-gently, but purposefully. He has to get up, feed him, and then go back to bed if it's a weekend. If it's any earlier than 6:30, he "helps" Buddy leave the bedroom.