My DD has suddenly started biting people. And not as a joke, if she is told no, or something is taken from her she will lunge forward and bite whatever is nearest too her, but she seems to focus more on our hands. She's even bitten my back without any indication of why she did it. I know babies/toddlers go through this stage at about 2/3 years old. But at 10 months old it seems a bit odd. Any advice on what it could be?