I do the same thing to a dog/puppy as I do to a horse that nips at me --> SMACK them hard across the nose and firmly say "NO." Biting is never acceptable.
Our lab puppy is about 6 to 7 months old. We will wrestle with her and play with her, and she has known from day 1 that she is not allowed to bite. I can pureposfully stick my fingers in her mouth when we are playing and she will NOT bite. She knows better.
If your dog is nine months old already and is STILL nipping at your hands, take her to a dog trainer who can help you teach your dog obedience. She is far too old to be nipping. Next things she might do is bite a small child and then what?
∞•*˚ Βгįťţαňγ ˚*•∞
It is not enough to know how to ride; one must know how to fall.