Now Mitzi is an older dog (9 y.o.) and when we play she also uses her teeth to touch my skin but never ever bites. I also 'bite' her a little by pinching her very gently or pull her ears or beard. It's our night time game before we go to bed. My husband told that when she was little she also tried to bite harder but it was enough when he just made a high pitched noise to make her stop.
