It forms a strong attachment to its owners, and can be protective of them and their possessions. It is easy to groom and maintain, requiring little more than brushing during the shedding period. The most common health problems are deafness and progressive blindness (both hereditary conditions) and accidental injury; otherwise, it is a robust breed with a lifespan of 12 to 14 years. The most enduring of Kaleski's myths relate to Dalmatian and Kelpie infusions into the early Cattle Dog breed. Woolsey imported several purebred Australian Cattle Dogs to add to his breeding program, including Oaklea Blue Ace, Glen Iris Boomerang and several Glen Iris bitches. The National Stock Dog Registry of Butler, Indiana, registered the breed, assigning American numbers without reference to Australian registrations.Australian Cattle Dogs had been classified in the 'miscellaneous' category at the American Kennel Club (AKC) since the 1930s; to get the breed full recognition, the AKC required that a National Breed Parent Club be organised for promotion and protection of the breed.