There are generally considered to be three types of American bulldog: the Classic type or Bully, the Performance type or Standard, and the Hybrid type. They may also be called the Johnson type or the Scott type. These types are named after the breeders who were influential in developing them and reestablishing the breed after World War II. American Bulldogs are thought to be descended from working type bulldogs found commonly on ranches and farms in the Southern and Midwestern parts of the United States. These dogs descended from the original Bulldog, and were preserved by working class immigrants who brought their working dogs with them to the American South from England. Small farmers and ranchers used this all-around working dog for many tasks. By the end of World War II, however, the breed was almost extinct, but through the efforts of several breeders who kept careful records and always with an eye for maintaining the breed's health and working abilities,the breed was re-established. Because of the many different types of work this breed can do, several distinct lines evolved, each emphasizing the traits needed to do a specific job. The best known lines are usually referred to as the Johnson and Scott types, after two of the prominent breeders that rescued the breed.
American Bulldogs are typically confident, social and active dogs that are at ease with their families. They bond strongly with their owners. Young American Bulldogs may be slightly aloof or shy with strangers but as they mature the breed's normal confidence usually asserts itself. This breed tolerates children and can do very well with them, provided they are given limits and socialized young. The more exposure to good training practices, and proper socialization, the more likely the success American bulldogs have of being well-adjusted. Purebred American Bulldogs are excellent tracking, obedience, working, guard and family dogs and excell at many of the K9 sport activities.
Size: between 27 to 54 kg (60 to 120 lb) and are 52 to 70 cm (20 to 28 inches) in height
Life Expectency: generally from 10–16 years
Energy: High energy and high prey drive
Obedience: Early training and socialization both in the home and outside of the home is essential for this breed.
Temperament: Loyal and loving companion, confident, social and active dogs that are at ease with their families. Aloof and watchful of strangers.
Grooming: Only regular brushing is required.
Shedding: light to moderate
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