Additional information (Wiki): The stern expression of the Pug belies its true sense of fun. Pugs are sociable dogs, and usually stubborn about certain things, but they are playful, charming, clever and are known to succeed in dog obedience skills. They rank 57th in Stanley Coren's The Intelligence of Dogs, being of fair working/obedience intelligence. Pugs are often referred to as the comedians of the dog world. Pugs are sensitive to the tone of a human voice, so harsh punishment is generally unnecessary. While Pugs usually get along well with other dogs and pets, they generally prefer the company of humans and require a great deal of human attention; they may become slightly anxious or agitated if their owner ignores them or does not play with them. In general, they are very attentive dogs, always at their owner's feet, in their lap, or following them from room to room.

While most Pugs appearing in eighteenth century prints tended to be long and lean, modern breed preferences are for a square, cobby body, a compact form, a deep chest, and well-developed muscle. Breeding preference goes to "button" Pugs. The legs are very strong, straight, of moderate length, and are set well under. The shoulders are moderately laid back. The pasterns are strong, neither steep nor down. The feet are neither so long as the foot of the hare, nor so round as that of the cat; well split-up toes, and the nails black. Dewclaws are generally removed. The lower teeth normally protrude further than their upper, meeting in an under-bite.

The Pug is a small breed of dog with a wrinkly, short muzzled face . The word "pug" may have come from the Old English pugg or "puge", which were affectionate terms for a playful little devil or monkey.  Pug puppies are often called puglets. The breed is often summarized as multum in parvo ("much in little"), describing the Pug's remarkable personality despite its small size.