Amber has bit me when I was trimming her toes; She has black toe nails and when she was younger I hit the quick on one of them and ever since when she sees me with the trimmers she will come unglued. I take her to petsmart to get her toenails trimmed now and even then every once in a while she will get one of the techs she doesn't trust and try to bit them. Not hard just enough to back them off her toenails. Amber is a two man rule for toenail trimming day. Ruby has never tried to bit me other than just playing.