Rebecca went through this too-was doing it regularly and took a chunk out of my mums arm!

I shouldnt laugh but I was shocked as it was a pretty nasty bite!
Anyway she doesnt do it as much, just goes to bite you but doesnt sink her teeth in.
We kept telling her that's naughty, pretended to cry, or sternly say no bite when we seen her about to lunge at us.
It aint a pleasant stage, but my madam does it in temper, or if u take something off her that she shouldnt be touching etc...
good luck!
xx