My 7 year old DS occasionally forgets how to behave and chases our hens. some of them are terribly flighty, and practically kill themselves trying to get away. When this happens he is chastised, and has an extra 5 hours of chores that he needs to finish before he gets any TV access... this helps him remember how animals should be treated for a while at least. You've got to punish them where it hurts, be it financial, ATV, TV, or no cell phone. if it doesn't 'hurt', it's not teaching them a lesson.