to help us learn how to speak dog, we welcome back robin bennett and susan briggs the dog gurus. hi. >> hi. >> hi. it's great to be with you. >> susan, where do we start? >> well, let's start with the mouth. is the mouth open, which means usually the dog is loving the interactions, or is the mouth closed, which is your first clue that they may be tolerating or moving towards hating an encounter. the other thing is, you know when we get uncomfortable, we kind of have signs that we're stressed a little bit. well, so do dogs. so they may lick their lips or they may even yawn. those are clues that the dog may just be tolerating the situation that they're in right now. >> robin, how about when dogs jump on you? does that just mean he's happy to see you? >> well, if you just came home from school, it might mean he's just happy to see you. but if he's in a new environment and he's jumping on you a lot and you've been with him the whole time, it might be him saying, "hey, i really need help. can you get me out of here?" it might mean that he's really starting to get upset with the situat