Breeds like Australian Shepherds have a higher susceptibility to epilepsy and seizures than most other dog breeds. Epilepsy and seizures in dogs are more or less like those that are seen in humans. The dog will as if lose control over his/her body and eventually lose consciousness, their bodies will become rigid and urinary incontinence may also be seen. This is a highly painful condition that affects a lot of dog breeds, especially the larger ones.
Larger and adult dogs may fetch a higher price, according to how well socialized, trained and obedient they are. Female dogs can fetch higher prices due to their breeding potential. An adult Aussie would easily weight anywhere up to 30 kilograms, growing about 2 ft. in size. While they do have certain health issues, mostly related to the merle gene that gives them their distinctive marbled coat, they are overall healthy and active dogs.