Q. How can you help stop your dog from 'play-biting' and 'mouthing' when I'm trying to touch him in any way?
A. Is it still a puppy? It is a lot easier to stop a puppy from doing it than an older dog that has been doing it for sometime.
Try this.....as soon as it play bites or jumps up at you. Stop playing immediately stand up and turn your back on the dog, ignore the dog, even carry on with other tasks, or talk to someone else. Once dog stops then try stroking it again, as soon as it play bites again, stop and keep repeating until he doesn't do it anymore. For it to be successful EVERYONE needs to do it EVERYTIME. Even with a young puppy it may take a couple of weeks. But it will take longer if you don't persevere.