Boxers come from late nineteenth-century Germany, where the Bullenbeisser, a hunting dog used to hold boar and deer, was crossed with English Bulldogs. The result is a square, muscular dog with a short, shiny fawn or brindle coat, often with white markings and a black mask. Boxers later worked as messenger, guard and police dogs.
Many Boxers are clownish and affectionate, greeting people with wiggles and leaps, and they stay puppyish for years. That means planning for daily exercise, patient reward-based training and supervision around small children. Their thin coat and short face make them sensitive to heat and cold, and the breed carries real heart and cancer risks. Many shelter "Boxers" are mixes, so size and energy vary from dog to dog.