How old is your lil one? It might be a form of nervousness.. or seperation anxiety..Perhaps a crate in your room at night might be a good idea... We have crate trained our Dobie and she sleeps in our room all the time,, but in her crate... its a safe haven for her and NEVER use the crate as punishment....

Is your pups teething? If all else fails,,, ask the Vet!!