Boston Terrier - Wikipedia
https://en.wikipedia.org/wiki/Boston_TerrierThe Boston Terrier is a compactly built, well-proportioned dog. It has a square-looking head with erect ears and a slightly arched neck. The muzzle is short and generally wrinkle-free, with an even or a slightly undershot bite.The chest is broad and the tail is short. According to international breed standards, the dog should weigh no more than 25 pounds (11 kg).