A. Your pup is likely reaching the point where teething kicks in x100. This is also a very important time for him to be learning bite inhibition (learning how hard of a bite causes pain, and learning control of his mouth). At time point in time you need to do two things for him. 1) Allow him to be able to chew. He instinctively needs to chew and have that natural satisfaction. This also plays a role in teething. So allow him to have access to appropriate (key word, here) things to chew on: bones, toys, antlers are really great. 2) You need to work on training to gain control of the situation when this behavior is not appropriate. I would accomplish this by trying saying "OW" or "Uh uh" in a higher pitched voice (think of a puppy yelping noise) so he learns "that hurt". This is how he learns to gauge "I bite mom this hard, it doesn't hurt", "I BITE MOM THIS HARD, it REALLY hurts". The look on your pups face the first time you yelp back usually surprised them and they immediately release. You can also very easily redirect him but offering a correction (stern) "NO" and then immediately offering him an appropriate toy to chew instead. Your pup will continue to be quite mouthy still for the next several months but using these tools to mold the behavior into something positive you will be much better able to manage.
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