Awww very cute! Our yellow lab sucks on her blanket to fall asleep. She goes into her kennel when she's tired and drags one out to snuggle with, it's adorable. She never did it when we first got her but when she was about 4 months old we took her to her "doggy daddys" house for a playdate and he sucks and kneeds a blanket to sleep and since that day she's done the same...it's the cutest thing! We love that she learned it from her daddy.
Miss Charlotte just curls up anywhere to sleep, nothing special needed.