The Australian Terrier is a small breed of dog of the terrier dog type. The breed was developed in Australia, although the ancestral types of dogs from which the breed desoends were from Great Britain.
The Australian Terrier is a small dog with short legs, weighing around 6.5 kilograms (14 lb) and standing about 25 centimetres (9.8 in) at the withers, with a medium length shaggy harsh double coat that is not normally trimmed. Fur is shorter on the muzzle, lower legs, and feet, and there is a ruff around the neck. The coat colours are shades of blue or red with a lighter coloured topknot, and with markings on face, ears, body and legs of a colour described in the breed standard as "tan, never sandy". The tail was traditionally docked. As with most pet dog breeds, all proportions and aspects of the body and head as well as colours and markings are extensively described in the breed standard.
There are three completed health surveys for Australian Terriers. Two surveys, one in 1997 and one in 2002, have been conducted by the Australian Terrier Club of America. The Club is currently collecting data for their next survey. The UK Kennel Club has a 2004 survey, but it has a much smaller sample size than the Australian Terrier Club of America surveys. Some of the respondents in the American surveys were from Australia, but there is no separate Australian health survey.
In both 1997 and 2002 Australian Terrier Club of America surveys, median longevity of Australian Terriers was 11 years (total sample size of 230 deceased dogs). In the Kennel Club (UK) 2004 survey, median longevity was 12.1 years, but the sample size was only 11 deceased dogs. 11 years is a typical median longevity for purebred dogs in general, but on the low end of longevities for breeds similar in size to Australian Terriers.
Major causes of death in the 2002 survey were cancer (67%), old age (17%), undetermined (16%), and diabetes (13%).
Among 619 living dogs in the 2002 Australian Terrier Club of America survey, the most commonly reported health problems were endocrine (primarily diabetes), allergic dermatitis, and musculoskeletal (primarily luxating patella and ruptured cranial cruciate ligament). Other conditions reported among more than 4% of the surveyed dogs were adult onset cataracts and ear infections. The much smaller 2004 UKC survey, with 28 living dogs, suggested similar health concerns.
The breed standard describes the ideal Australian Terrier temperament as spirited, alert, "with the natural aggressiveness of a ratter and hedge hunter". Aussies rank 34th in Stanley Coren's The Intelligence of Dogs, being of above average "Working and Obedience" intelligence, indicating good trainability. As with other terriers, they can be dog-aggressive and somewhat bossy, and care must be taken when living in a multi-pet household. In general, adult male terriers do not get along well with other adult male dogs. Since the Australian Terrier was also bred for companionship, they tend to be very people friendly, and enjoy interacting with people.