Breed Standard
Head: Harmonious proportions. Clean and square. Domed skull. Distinct stop. Muzzle as broad and powerful as possible. Lower jaw protrudes beyond the upper jaw and curves slightly upward (prognathism).
Ears: Set on high. Not too broad. Cropped to a point, held erect.
Eyes: Not too small, not protruding. Dark brown color. Dark rims.
Body: Square. Round, powerful neck. Broad, deep forechest. Deep brisket. Well sprung ribs. Short, muscular loin. Straight, muscular back.
Tail: Set high. Docked and carried erect.
Hair: Short and lying close to the body, hard, thick, and shiny.
Coat: Fawn or brindle. Shades of fawn from light tan to mahogany, preferably golden-red. Black mask. Brindle coat has dark or black streaking on a fawn background. White markings are permissible.
Size: Dog: 57 to 64 cm. (22.5-25 in).Bitch: 53 to 60 cm. (21-23.5 ).
Weight: 25 to 30 kg (55-66 lb).
History
The Boxer is part of the Molosser dog group, developed in Germany in the late 19th century from the now extinct Bullenbeisser, a dog of Mastiff descent, and Bulldogs brought in from Great Britain. The Bullenbeisser had been working as a hunting dog for centuries, employed in the pursuit of bear, wild boar, and deer. Its task was to seize the prey and hold it until the hunters arrived. In later years, faster dogs were favored and a smaller Bullenbeisser was bred in Brabant, in northern Belgium. It is generally accepted that the Brabanter Bullenbeisser was a direct ancestor of today's Boxer. In 1894, three Germans by the names of Friedrich Robert, Elard Konig, and R. Hopner decided to stabilize the breed and put it on exhibition at a dog show. This was done in Munich in 1895, and the next year they founded the first Boxer Club, the Deutscher Boxer Club. The Club went on to publish the first Boxer breed standard in 1902, a detailed document that has not been changed much to this day.
The breed was introduced to other parts of Europe in the late 19th century and to the United States around the turn of the 20th century. The American Kennel Club (AKC) registered the first Boxer in 1904, and recognized the first Boxer champion, Dampf vom Dom, in 1915. During World War I, the Boxer was co-opted for military work, acting as a valuable messenger dog, pack-carrier, attack dog, and guard dog. It was not until after World War II that the Boxer became popular around the world. Taken home by returning soldiers, they introduced the dog to a wider audience and soon became a favorite as a companion, a show dog, and a guard dog.
Behavior
Boxers are a bright, energetic, and playful breed and tend to be very good with children. They are patient and spirited with children, but also protective, making them a popular choice for families. They are active, strong dogs that require adequate exercise to prevent boredom-associated behaviors such as chewing, digging, or licking. 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 corrections often has limited usefulness. Boxers, like other animals, typically respond better to positive reinforcement techniques such as clicker training, an approach based on operant conditioning and behaviorism, which offers the dog an opportunity to think independently and to problem-solve.
The Boxer by nature is not an aggressive or vicious breed. It is an instinctive guardian and can become very attached to its family. Like all dogs, it requires proper socialization. Boxers are generally patient with smaller dogs and puppies, but difficulties with larger adult dogs, especially those of the same sex, may occur. Boxers are generally more comfortable with companionship, in either human or canine form. They are very patient and are great to adopt as family dogs because they are good with children and people of all kinds.
The Boxer can make a good house dog, but he must be given a considerable amount of exercise. His short coat requires little care.
Function
Boxers are friendly, lively companions that are popular as family dogs. Their suspicion of strangers, alertness, agility, and strength make them formidable guard dogs. They sometimes appear at dog agility or dog obedience trials and flyball events. These strong and intelligent animals have also been used as service dogs, guide dogs for the blind, therapy dogs, police dogs in K9 units, and occasionally herding cattle or sheep. The versatility of Boxers was recognized early on by the military, which has used them as valuable messenger dogs, pack carriers, and attack and guard dogs in times of war.
Health
Leading health issues to which Boxers are prone include cancers, heart conditions such as aortic stenosis and arrhythmogenic right ventricular cardiomyopathy (the so-called "Boxer cardiomyopathy"), hypothyroidism, hip dysplasia, and degenerative myelopathy and epilepsy; other conditions that may be seen are gastric dilatation volvulus (also known as bloat), intestinal problems, and allergies (although these may be more related to diet than breed). Entropion, a malformation of the eyelid requiring surgical correction, is occasionally seen, and some lines have a tendency toward spondylosis deformans, a fusing of the spine, or dystocia. Other conditions that are less common but occur more often in Boxers than other breeds are hystiocytic ulcerative colitis (sometimes called Boxer colitis), an invasive E. coli infection, and indolent corneal ulcers, often called Boxer eye ulcers.
About 22% of puppies die before reaching seven weeks of age. Stillbirth is the most frequent cause of death, followed by infection. Mortality due to infection increases significantly with increases in inbreeding.
According to a UK Kennel Club health survey, cancer accounts for 38.5% of Boxer deaths, followed by old age (21.5%), cardiac (6.9%) and gastrointestinal (6.9%) related issues. The breed is particularly predisposed to mast cell tumours, a cancer of the immune system. Median lifespan was 10.25 years. Responsible breeders use available tests to screen their breeding stock before breeding, and in some cases throughout the life of the dog, in an attempt to minimize the occurrence of these diseases in future generations.
As an athletic breed, proper exercise and conditioning is important for the continued health and longevity of the Boxer. Care must be taken not to overexercise young dogs, as this may damage growing bones, but once mature, Boxers can be excellent jogging or running companions. Because of their brachycephalic heads, they do not do well with high heat or humidity, and common sense should prevail when exercising a Boxer in these conditions.