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Many experts believe that dogs have learned to smile because they've seen humans do the same or because we reward them for doing so, Stilwell said.

Woodard said the doggy smile is also known as a submissive grin, or a sign that your dog wants to appease you.

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  • When experiencing a positive emotion such as happiness, their body language should not include signs of fear or aggression. A dog will smile if they are happy and stable, especially when spending positive time with their guardians. Not only can dogs smile, but they can recognize smiling in their human guardians.

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