My dog keeps licking my other dogs face in same spot?

Asked: My dog keeps licking my other dogs face in same spot?I read that this could be caused by a submissive issue, but my dogs have known each other for 6 years, since the "licker" was a puppy. The "lickee" is around 10 years old. Recently, she has been licking her paws excessively. There are no wounds and she is not limping. I'm not sure if this behavior may be related to what is going on, but I figured I would include it. The "licker" licks the side of her

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