Bentley does this too! On the weekends when Daddy doesn't get up to go to work, he tries to get us up anyway, at 5:30 AM! Bitsy is opposite, she likes to snooze in the mornings. She'll go out for her morning walk and pee pee (only cause she has to), but when she comes back in she heads straight back to the bed! She thinks we are nuts for getting up so early
I think dogs are like kids, they thrive on routines! Our dogs don't like it when we are out of routine.