For a second there I thought you were talking about my Toby. He has the very same issues....biting feet, hands, arms, whatever is available, chews on carpets, barks at us when we say no and oh yeah, one more thing you didn't mention....pees a little bit everywhere. Sigh..... He is 5 1/2 months old and I am hoping that when he is neutered he will settle down. I always try to devert his attention, when he is biting, to something other than skin. That doesn't always work. If I catch him peeing and say no harshly, he barks at me. I used to be uptight about all the above stuff but now I just go with the flow and take one day at a time. If I look back to two weeks ago, I think things are a little easier, or I just learned to accept it.