 The Pug is a breed of dog with a wrinkly , short @-@ muzzled face and curled tail . The breed has a fine , glossy coat that comes in a variety of colours , most often fawn or black , and a compact square body with well @-@ developed muscles . Pugs were brought from China to Europe in the sixteenth century and were popularized in Germany in the eighteenth century . They were introduced to the United States in the nineteenth century and have since become a popular breed in many countries around the world .
The Pug is a very old breed of dog , and is one of the oldest toilet breeds .