We have three fur buts that sleep with us. The boys are bigger and
hop on and off. Some nights in the summer it gets warm and they will hope off and go lay on the tile floor in the bathroom. Remy will sleep on top of my pillow or under the covers at my knees or curled up next to dh. We keep her between us and if we wake up durning the night we check on her !!
The funny part is she does hop off. We have carpet and the bed is not too high.. but sometimes she has a hard time hopping back on. We laugh and call her "wack a mole" .. like the game where the ground hog head pop out and you hit them with a mallot (now that I think of it.. sounds kind of harsh).. becaue all we see is her head as she keeps hopping. if she doent get up on her own she will come to my side of the bed and bark for me.
As to sleep... some nights are good some are not. Bailey snores, and sometimes FARTS!!

Sam is ok, Remy moves back and forth between my dh and me (shares the love) They are so orientated to us.. and I love to cuddle.