The Boxer was developed in late nineteenth-century Germany from the Bullenbeisser, a hunting dog that held boar and deer, crossed with English Bulldogs. The result is a square, muscular dog with a short, shiny coat in fawn or brindle, a black mask and a blunt muzzle. Boxers later worked as messenger, guard and police dogs.
Most Boxers are clownish, affectionate and physical, and many stay puppyish for years. Expect leaping, wiggling and a need for patient, reward-based training. They bond closely with their people and often dislike long stretches alone. The short face and thin coat make them uncomfortable in heat and cold, and the breed carries real heart and cancer risks. Every Boxer differs, and many shelter dogs labeled Boxers are mixes.