My Sophie will climb into the rocking chair with her front feet and head in the chair and her back legs still on the ground and rock herself to sleep. It's a riot to watch her. I've rocked her since she was 6 weeks old and she still loves to rock with or without me.
Lol, well Samson falls asleep all the time sitting up, I actually have some pics of him waiting for a treat and snoozing, but he's almost 11...Angel I have seen fall asleep propped up looking out the front window, have to catch a pic of that one, so no, I wouldn't worry, seems pretty normal to me
Apollo starts to get off the couch...two paws on the ground..then rests his head on the coffee table, while the other half of his body is still on the couch...he then falls asleep for a few minutes..until he begins to wobble.