Pug is a toy dog breed with a wrinkly face and medium-small body. Pug puppies are often called puglets. The word "pug" may have come from the Old English pugg, which was an affectionate term for a playful little devil or monkey. See also Puck (mythology).

The breed is often summarized as multum in parvo ("much in little"), describing the Pug's great personality and small size