with 2 cats and 2 dogs my husband sleeps on his side and all the furries sleep on mine. i'm on the side of the bed that's next to the wall, so when any of us want to leave we have to crawl over him. serves him right LOL, since i generally have to sleep in one position most of the night. but the animals are all sleeping well.
one dog i had years ago used to straighten his legs and push me off the bed. another one used to get under the covers, go all the way to the bottom of the bed, then turn around and come back up so she could put her head on my pillow and her hair was now going in the right direction. shaking my head still on that one. gotta luv 'em!