Do animals have a sixth sense that detects the current in railway tracks?

The long-running series in which readers answer other readers' questions on subjects ranging from trivial flights of fancy to profound scientific conceptsAlthough the borders of railway lines are teeming with wildlife, you rarely see dead animals lying beside the electrified third rail. Do animals have a sixth sense that detects the electric current and tells them to keep away, which we humans tragically appear to lack?Graham Larkbey, London E17 Continue reading...