Talon is driving me up a wall with this. I have never seen a dog do the urine tasting and teeth chattering as much as he does. How do you stop this? Will neutering help? I don't think I'd mind as much if it wasn't for the fact he is doing it to Art every time he is separated from him. It's like he has to "confirm" it's really Art. I don't even really mind the sniffing/licking groin thing. It's the quivering jaw, foaming lip, and darting tongue that really freak me out. We've been trying to just distract him onto something else, but he's pretty persistent. Plus, once his head is anywhere near Arts groin that it's, the chattering starts. >_< Any suggestions?