This list of mythical creatures that begin with this letter and I am constantly gathering information from each continent, and is continually being updated.
Questing Beast (Arthurian legend)
The Questing Beast, or the Beast Glatisant, is a cross-animal monster appearing in many medieval texts of Arthurian legend and modern works inspired by them. In the French prose cycles, and consequently in the quasi-canon of Le Morte d'Arthur, the hunt for the Beast is the subject of quests futilely undertaken by King Pellinore and his family and finally achieved by Sir Palamedes and his companions.
The strange creature has the head and neck of a snake, the body of a leopard, the haunches of a lion, and the feet of a hart. Its name comes from the great noise that it emits from its belly, a barking like "thirty couple hounds questing". Though the medieval texts provide various physical descriptions of the Questing Beast, with some decriptions as "as white as new fallen snow, bigger than a hare but smaller than a fox".