Skya is a major mouth licker.....every dog, sometimes to the point where they are annoyed and like "GET OUT OF MY FACE." If we have any new dogs over she just follows them around and licks their mouths. I'd say she's possibly the lowest ranking member of my dog pack, she won't eat her food until the other dogs have finished. I think she has appointed herself as the low pack member, they don't treat her any different. However with dogs she doesn't know she acts pretty vicious at first and if they don't act vicious back then she acts like they are best friends, if they act vicious back its another story. So she doesn't really act submissive to all other dogs? She's hard to figure out, she's a nut. But yeah the mouth licking is pretty common in dogs.