It took about 7/8 months for our puppy to get out of the biting phase. I had asked our vet about it and she assured us it’s a normal phase.

He would literally attacked my daughter. I thought he was a demon.

Thankfully he only weighs 10lbs full grown so he’s small.
He is now super sweet and loving.

One of the things the vet told me is that puppies play by biting and the other puppies yelp to signal it’s too hard of a bite and that’s how they learn to play softer.

Our only solution if we couldn’t redirect the biting to a toy was to crate him every time he did it. Thank god he outgrew that phase.