The coat of arms of Oxford is the official heraldic arms of Oxford, used by Oxford City Council. While the bull is common in heraldry, in the arms of Oxford an ox, which is less common, is used. The arms is canting, showing an ox fording over water. The coat of arms with its crest—a blue imperial lion—and supporters was not formally granted but was recorded at the heraldic visitation on 12 August 1634. The oldest image of the ox on the water is from a seal for Oxford from the 14th Century. The water is most likely the River Thames, which runs through the city.