to a Merle. The breeding of two Merle dogs runs a high risk (in all breeds) of sight and hearing defects in the offspring. As a “solid” (dog not showing the Merle pattern) may still genetically be a Merle, it is vital to perform a full DNA Merle sequence test to determine the “lengths” of Merle in each dog so that the safest breeding practices are used. Temperament Graziers, stockmen and dairy farmers across Australia since days long past have typically selected breeds which display the abilities required to meet their working needs. The temperament found in a Koolie is a culmination of these much sought-after abilities. The optimal worker possesses a combination of working skills and bonding temperament. There are times when an uninitiated dog owner or a new enthusiast mistakes the Koolie as a shy, reserved or even a timid animal. The Koolie's temperament needs to be understood in proper context when one seeks an optimal match of skills and demeanour. Koolies are intelligent animals, and the most experienced handlers know well that they need guidance in training. A steady and supportive approach will be productive, proving the Koolie's adaptability in diverse situations when given time. Owners will be rewarded through the Koolie's diligence in varied roles such as in work situations, sporting activities, loyal service or the time honoured role of companionship. Known to be patient, temperate, dedicated, with a strong sense of willingness and devotion. They show an untiring enthusiasm for work and an admirable hardiness when the job or circumstance requires. Given their nature, it is paramount that pups are well trained for obedience and are given both mentally challenging goals as well as physical exercise. Health The median longevity of Koolies is about 15 years, which is a typical lifespan for this breed. Koolies have a diverse but small gene pool and can suffer from the many genetic problems found in recognised breeds. Many of these problems have genetic tests currently available, but hip and elbow scoring is necessary to reduce the incidence of Hip and Elbow Dysplasia. The merle for which the Koolie is most recognised by can produce blind and/or deaf white pups, if 2 merles are bred together, so merle testing should be performed prior to breeding. The Australian Koolie Association is the only Koolie breed registry which has mandatory DNA breed ID testing before a dog of unverified breeding can