hi i am having trouble with my ferret i ve had her for nearly four months now but i can t get her out of bitting her sister is fine i ve tried everything but flicking her on nose i don t like the idea and have heard it could make it dislike u shes an albino 7 months old many thanks peter

Optional Information:
Age: <1; Female; Breed: albino ferret

Already Tried:
firm no and puting it in a time out box, spraying it with water, and putting knuckle in mouth when trying to nip