Livestock the cow which is known as orra is one that spread of methylene blue in the eustachian tube, which is dedicated to smell the cows and to pass its trunk in the year determines the heat of the cow, which is then spread to the friend toro. I.e., it identifies the cows that may be pregnant. In a little colloquial terms, is a manifestation of homosexual cattle, and essential in any herd of cattle for breeding.
