In heraldry, the term attitude describes the position in which a figure is emblazoned as a charge, a supporter, or as a crest. The attitude of a heraldic figure always precedes any reference to the tincture of the figure and its parts. Some attitudes apply only to predatory beasts, exemplified by the beast most usual to heraldry – the heraldic lion; other terms apply to docile animals, such as the doe, usually emblazoned as a "hind".
An eagle volant recursant descendant in pale, the emblem of the 38th Air Division of the US Air Force
The wyvern is a type of mythical dragon with two legs, two wings, and often a pointed tail which is said to be a venomous stinger.
Y Ddraig Aur, a flag which was carried by Owain Glyndwr who most notably displayed it at Twt Hill after his successes in reclaiming Welsh territory. The wyvern is based on his privy seal.
A wyvern from a fourteenth-century manuscript in the National Library of Wales, Aberystwyth: this example has a second head at the end of its tail.
A carved wyvern on the choir stalls of Chester Cathedral in Cheshire, England, c. 1380
A wyvern fighting with a wolf, relief, Trento Cathedral, Italy