Unfortunately, epilepsy has become such a widespread problem in Aussies that there are very few, if any, bloodlines that have been untouched by the disease. The only advice we can give is to do extensive research into any prospective crosses, examining the extended family history of siblings, parents, aunts, uncles, grandparents, etc. of prospective mates. In short, you should examine not only your dog’s “vertical” pedigree, but also the “horizontal” pedigree. Responsible breeders will spend the time and know the risk involved with their breeding stock, and should be able to give you specific details as to the incidence of IE in their bloodline(s).