Q:My dog will sometimes curve up the corners of his mouth and show some of his teeth. It almost reminds me of a human smile, but I’m not sure if this is something dogs also do. Is this normal? Can a dog smile? A: Yes, dogs can physically smile, but a dog smile may not always mean that they are happy. It’s important to consider your pooch’s overall body language. By doing so, you'll have more clues to help determine if your furry friend is smiling because they’re happy or for some other...