The Boxer is a breed of stocky, medium-sized, short-haired dog with a smooth fawn or brindled coat and square-jawed muzzle. Boxers have very strong jaws and a powerful bite. They are part of the Molosser group of dogs, bred from the extinct German Bullenbeisser and the English Bulldog.
Appearance
The head is the most distinctive feature of the Boxer. The breed standard dictates that it must be in perfect proportion to his body and above all it must never be too light. The greatest value is to be placed on its muzzle being of correct form and in absolute proportion to the skull. The length of the muzzle to the whole of the head should be as 1:3. Folds are always indicated from the root of the nose running downwards on both sides of the muzzle and the tip of the nose should lie somewhat higher than the root of the muzzle. In addition a Boxer should have a slight underbite, i.e., the lower jaw should protrude beyond the upper jaw and bend slightly upwards.
Boxers were originally a docked and cropped breed, and this tradition is still maintained in some countries. However, due to pressure from veterinary associations, animal rights groups and the general public, both cropping of the ears and docking of the tail have been prohibited in many countries around the world. In the United States and Canada as of 2007, cropped ears are still more common in show dogs.
Temperament
The character of the Boxer is of the greatest importance and demands the most careful attention. He is renowned for his great love and faithfulness to his master and household, his alertness, and fearless courage as a defender and protector. The Boxer is docile but distrustful of strangers. He is bright and friendly in play but brave and determined when roused. His intelligence and willing tractability, his modesty, and cleanliness make him a highly desirable family dog and cheerful companion. They are the soul of honesty and loyalty. They are never false nor treacherous even in old age.
Boxers are a bright, energetic and playful breed and tend to be very good with children. It's best if obedience training is started early since they also have a strong personality and therefore can be harder to train when older. This, in addition to their strength, might present a challenge for a first-time dog owner. Boxers have earned a slight reputation of being "headstrong", which can be related to inappropriate obedience training. Owing to their intelligence and working breed characteristics, training based on the use of corrections often has limited usefulness. Boxers often respond much better to positive reinforcement techniques such as clicker training. It is also true that Boxers have a very long puppyhood and adolescence, and are often called the "Peter Pan" of the dog world. They are not considered fully mature until two to three years of age, one of the longest times in dogdom, and thus need early training to keep their high energy from wearing out their owner.
The Boxer by nature is not an aggressive or vicious breed but needs socialization to tolerate other dogs well. Their sometimes over-protective, territorial and dominating attitude, often most intense in males, can be problematic. Boxers are generally patient with smaller dogs but can be dominant with larger dogs of the same sex. A poorly bred or trained dog is capable of seriously injuring or killing other animals.