Why does my puppy bite my arm?

my puppy is 15 weeks old

Mine does that too. You just need to teach them not to, because they think you are playing with them.

Because it's a 15 week old puppy

It's proberly 'teething'

maybe you should feed him ... just kidding buy him a chew toy maybe it will stop

Puppies play with YOU, just like you were another puppy. No, he's NOT vicious...herding pups (Collies, shelties, German Shepherds, Aussies, Heelers) are the worst for 'mouthing', especially going for your heels...but all breeds of pups do it to some extent. He barks at the other dogs??

My dog MoJo is a German Shepherd...and was the worst biter/mouther of any GSD's I've ever had...he'd get so excited if I pushed him away, he'd come back like an attack dog...this was at only 9 weeks old. The best 'discipline' he ever learned, was if he played rough, I wouldn't play at all...I'd get up, and go to the bathroom and close the door...he hated that, and in 3 days or so, had 'learned' that rough play equaled NO play. You can also 'yelp OUCH' just like another puppy, so he knows he's hurting you...that stops some from getting over excited. Also, distracting him with a toy, saying...'no bite...'...hand him the toy...saying 'here'...or 'trade'...any one word will work...

Not every trick of the trade fits every dog...so it's nice to have an arsenal of alternatives for training...after his shots are done, take him to a puppy class...a professional can do wonders for you, in terms of assessing what it is your puppy is needing.

He is just being a playful pup, with needle teeth...YIKES!

phrannie

he's playin duh!!

cause its teathing

get a wet rag and put it in the freazer after 10 min take it out and give it 2 your puppy

My GS pup is 4 months old and does arm biting. Very sharp teeth. She gets angry when I say, NO!. My arm is covered with fresh and healing bites.

I tried exiling her to the bathroom to calm her, and this works OK, briefly. Also, I've tried a spray filled with a dilute solution of what she hates most: Adams flea shampoo.
Actually spraying is no longer necessary, just reaching for the sprayer causes her to withdraw.

Her baby teeth show no signs of loosening. Love her to pieces, but this must stop.