8 Signs That Your Dog Is One of the Happiest Animals in the World

They Smile

Many dogs express happiness through a smile. Their mouth is slightly open, with lips slightly raised, showing some teeth but without any aggression. Some experts believe that dogs learned to smile by observing people and now do the same, as we show our affection through smiles. So, if your dog smiles, know that they are saying, “I am so happy with you!”