Dogs do have a variety of distinct facial expressions, however canines are much more limited in what they can do with their faces. This is because a dog's face is dominated by his muzzle. A dog's muzzle serves as both a weapon and a tool to manipulate the environment, so it is designed for strength rather than for flexibility. That means that the mouth and the lower portion of the dogs face can only adopt a limited range of expressions (Click here...)STA Blog Home Page - SeniorTravelAide
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