My Pup, Finny, is still play biting...on us...at age 5 monthes! is this normal? any how, when he does bite, we give him a good, firm scruff shaking. He is very willfull and needs a very frim hand. the scruffing is just not cutting it, although he will stop after a couple of scruffs. He start biting on my pants or arm, I'll scruff him, and he just come back harder. Ive literally had to do it 5 times for him to get the picture. Dont get me wrong, hes aa very smart dog, too smart for his own good. But I love him to pieces. Question is this: If he keeps biting me and wont stop, do you think its ok to give him a little whck on the nose to stop him? Finny was biting my mom, and was growing, so her first reaction was to give the dog a little whack on the nose. She did it, and the dog stopped, walked away, and cameback licking her hand. So is this good?