Gypsy you are correct,if water is not available for survival,then urinate and drink.It is life saving also.As camel urine,cow urine also also have lot of medical qualities and if cow alive or dead its all parts can be utilaised. Even from cow tunk it is used for generating Bio gas for cooking and generate electricity and same cow tung made dry and used as fire cake . Since cow is useful in may ways, we indians worship cow as one of our god to respect the animal.