My 4 year old dog inherited this. Its a fatal brain and spine disease and only a miracle can cure this. I’m truly heartbroken . I bought her in a pet shop and had no idea she came from a puppy mill or didn’t even know what a puppy mill was till now. a puppy mill is basically like a dog farm where they’re caged and made to breed and treated like shit so therefore they acquire trauma and a bunch of illnesses and diseases and their young ones eventually get this. Little by little she’s losing grasp of herself . It truly breaks my heart as I love my pets dearly. Uggggghhhhh.