is it a breed? that depends entirly on who you talk too lol. in all technicality it IS a breed, and "mini aussies" have been arounds since the begining, they were simple not known as mini aussies, they were just aussies. when a breed gets picked up for conformation they pick a size, in the aussies case they went with the larger, so small aussies kinda got left out lol it was in 1968 that someone actually started breeding the smaller aussies. they DO have a standard, they DO have a breed club, and they have been around since the begining of the Aussie. so in all reality, yes they ARE a breed, they are aussie's, who just happen to be small lol