Ha Ha - That looks just like my pup right now who is 6 months. I have an appointment this Monday for them to remove the canines and also do the spay..... kill 2 birds with one stone
How old is he/she? Do they feel lose at all? If not, then I would take her to the Vet..... small dogs are notorious for this kind of stuff. If she/he is still under 6 months, I would give her a little more time.