A device permitting movement of a cow's tail while the cow is in its stall and which will maintain the tail elevated when the animal is lying down to avoid tail contact with the animal's droppings. The device includes an elongated elastic cord for extension from a fixed overhead point to an integral...http://www.google.co.uk/patents/US4969917?utm_source=gb-gplus-sharePatent US4969917 - Animal tail control device
