I have 2 dogs I rescued. One is a Great Dane and the other is a Rottie mix. It took me a couple years to get the rottie to sleep past 5. I was told that was because the kennel attendants always showed up at 5 to take care of the dogs. Now if I lay real still till 6 or 6:30 he won't bother me. The dane sleeps with me, and she is a lazy one; a bed hog too. They won't go downstairs to my sewing studio, so I get peace and quiet down there, till they get lonesome and start barking for me to come up with them.