One of the older breeds, the Pug is believed to have originated before 400 BC in Asia. He was a pet at Tibetan monasteries and later traveled to Japan. The Pug then came to Europe, where the endearing little dog was the pet of royalty in several countries and even became the official dog of the House of Orange in Holland. A Pug saved William, Prince of Orange's life by alerting him to the approach of the Spaniards in 1572 at Hermingny. Napoleon's wife, Josephine, sent secret messages to her husband under the collar of her Pug while she was in prison.