Best our vets could tell is that Dusty's ears had either been frostbitten at some point or she was some kind of a mutant Scottish Fold. The ears weren't perfectly rounded they were more like 'tipped' to some extent.

Her tail had very clear signs of having been amputated about 4 inches or so. They don't know if the tail was a separate injury or from frostbite at same time as ears maybe? We'll never know for sure.