My 9 month old rescue pup is a bit of a mouthy boy, to say the least. We have tried most of the recommended techniques for curbing this behavior, but I am not seeing enough progress. Saying "ouch" or "yip" in a loud high-pitched voice only excites him, and he thinks it's part of the game, so he goes in for another bite. Standing up and walking away doesn't seem to impact him, as he quickly finds something else to occupy his little mind. I have heard and read that we should never allow the dog's teeth to touch our skin, but this happens so much when hand-delivering treats, especially when I am rewarding him for proper positioning on loose-leash training. I find it difficult to juggle the leash, the clicker, the treats and sometimes a full poop bag, so I end up holding a few treats in my hand and then trying to just feed him one treat out of the same hand. He often pinches my finger with his teeth as he takes the treat, which is reinforced by the treat he receives. I noticed kikopup places the treat behind her on the ground in her loose-leash walking video. I started doing this on our walk this morning, but I wonder if I should be delivering all his rewards this way, so that he will never be reinforced for putting his teeth on my skin. I know for some trick training, you can toss the treat away to reset before repeating the behavior. Would this work for basic obedience training, or is hand-delivery essential?