Apparently, the tongue lick means the dog is anxious, but it is cute.

TheOneWithTheHair@lemmy.world to aww@lemmy.world – 189 points –
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If we're studying the psychology of behavior in any life form, we can't allow ourselves to fall into boxy or linear thinking. It's a trap we're prone to.

Pupils dilate differently in response to light, drugs, love, food, being Nala in the Lion King, getting punched in the eye, concussions, and genetic manipulation.