Right bitting is semi-normal i have 2 girls. one of which Shadow was 8weeks when i got her and shes fine, on the other hand Amber is now 2years old and only 5 weeks when i got her she would bite or (wheen) constantly on ear lobes, elbows, ankles and forearms sometimes bitting down really hard and bitting quite nastilly. i found by accident by watching the lion man on tv. by using a babys feeding bottle with cat milk in whenever she started nipping over time shes stopped bitting. i hope this can be of some help. though i did notice a deffinate change in her after she was spayed.