Is this the kind of thing that will go away with age, typically? My 5 month old puppy always wants to bite on my hands when I pet him to show affection. Sometimes he will just lick, but often the licking turns into teething. It's always in a playful nature with tail wagging, and it's almost always a soft teething, but every now and then he will bite a little harder. I've tried to stop this, but he doesn't seem to be responding to any of my attempts. Hopefully it will go away as he grows up.