8. Overtoun Bridge
The Overtoun Bridge in Scotland has been the sight of a remarkable phenomenon. Since the 1950s, around fifty dogs have leaped to their deaths in the water below. It appears that all the dogs have long snouts and jump from the same side of the bridge.
Studies have been conducted as to why the dogs would do this. One study suggested that the dogs were smelling the scent of male mink urine which they followed.
The study was not conclusive. It remains a mystery to this day.