I have noticed that Dharma, my 3-4 month old Lab/Doberman cross pup has never "smiled". You know, that open mouthed, breathy, toothy thing we call a smile! In fact I notice that when she is running she rarely opens her mouth at all like my other dogs do. Is this a learned behaviour? Do all puppies and dogs smile? She is SO serious looking! I would love to see her looking happy, I'm fairly sure she is!
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