My DC have really struggled with the monster puppy - in fact DS pretty much spent 3 months in his room avoiding him...
We had a couple of howly times in his crate, but nothing too bad and housetraining was a bit of a pain, but nothing unexpected or too awful.
It was just his teeth, he bit constantly and he chased anything that moved and bit that too, so if you walked you had a puppy attached to your foot or leg, socks only existed to be pulled off - gloves were even better, because they were socks with the added bonus of hands inside.
If you tried to stroke him you got chewed, if you stood still and ignored him that gave him free reign to chew you, if you tried to move away from the biting you were clearly playing a chasing game and he chewed you, if you made a noise when he bit you that was an invitation to play a bitey game... It was constant for about 3 months.
On top of that he chews everything, he still does that in fact, furniture, clothes, anything left out at all, wires, I've even see him sidle up to the wall and give it a nibble, lol. He hasn't destroyed or damaged anything important, but that's because I watch him constantly and he's crated at night or when left.
Now at 7 months - he still very occasionally tries to gently chew your hand, but I can cope with that and to be fair to him lots of people have told me that as a breed they are particularly bitey chewy puppies ... But it's completely put me off puppies.
I've had adult dogs before, my last one I got when he was about 6 months - I'd do that again, but not those first few months.