what are the dragons that the nazgul ride
Nazgûl They are also called the Fell Riders and the Black Wings (when they ride the fell beasts), as well as the Shadows, the Servants of Sauron, and the Nine Servants of the Lord of the Rings. The Orcs of the Tower of Cirith Ungol call them Shriekers.
Centaur C.S. Lewis' The Chronicles of Narnia series depicts centaurs as the wisest and noblest of creatures. Narnian Centaurs are gifted at stargazing, prophecy, healing, and warfare, a fierce and valiant race always faithful to the High King Aslan the Lion. Lewis generally used the species to inspire awe in his readers.