I guess I’m confused by what you mean about the breed “Aussie.” There are Australian Cattle Dogs AKA blue heeler and then there are Australian Shepherds. The first were bred in Australia from 1. Dalmatians,2. an extinct breed - kelpies I think, and 3. dingos. The later were bred in Texas and are born without a tail. I had an early version when I was a kid growing up down there.
It appears from the photo that what you have is an Australian Shepherd.
We have a heeler/border collie mix. A true heeler has a white spot on top of his head and a white tip on his full length tail. They have pricked ears.
Australian Shepard.