Good for you with takign this puppy to classes.
I would suggest you ask the instructor how to go about it because s/he has met this puppy.
Genreally speaking, puppies are very mouthy overall. It's your job to teach them that humans have very sensitive skin and teeth are not appropriate ways to play with humans.
The way I do this is to take myself out of the situation when the puppy gets this intent using me as a chew toy. I will just stand up, walk away, sometimes replace me with a chew item and let the puppy calm down for a few minutes. When the puppy is no longer soliciting my attention, I will go back to playing. If again he insists on using me as a chew toy, I do the same thing again. If it gets worse, the puppy has earned himself a "time out" to settle down in a puppy proofed area (my bathroom) or a gated kitchen. I don't talk with the pup and it's very black and white.
If you are consistent and patient this behavior will get better. It's also a very tough phase for puppy and owner alike.
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PHReign
Email me: HReign@pethobbyist.com" target="_blank">PHReign@pethobbyist.com
Dear dog,
I can not buy anything larger than a king sized bed. I am very sorry about this. Do not think that I will continue to sleep on the couch to ensure your comfort. Look at videos of dogs sleeping, they can actually curl up in a ball. It is not necessary to sleep perpendicular to each other stretched out to your fullest extent possible. I also know that sticking tails straigt out and having tongues hanging out the other end to maximize space used is nothing more than doggy sarcasm.
