I had an elderly neighbor that blacked out periodically for somewhat unclear reasons. Her dog was able to give her advance warning so that she can sit down before falling down. He wasn't trained, just did it naturally. She had the dog cloned with the hope that the trait was innate. The clone didn't really have the temperament of the clonee. Environment? Who knows.

Unfortunately, the neighbor had COVID-19 sequela that put her in a nursing home recently (greatly accelerated memory loss), so it was unclear if the clone would have been able to detect the same precursors to blacking out.