I'm not sure if this should be here or in the medical section, but our vet isn't too worried about it, but, ever since our puppy turned like 6 months old (now 16 months) she's been licking the air, she'll come sit next to us at the dinner table and not whine, or bark, or howl, but she'll just start licking the air, or if we're just hanging out she'll start licking the air randomly. Does anyone else do this?