Pacing Mustang

Pacing Mustang,
legendary wild stallion in the folk tales of the Western frontier, famed for his extraordinary beauty, size, strength, cunning, and untamable independence of spirit. He appears in Moby-Dick as “the White Steed of the Prairies,” but his color varies in other versions, being black in The Pacing Mustang by Ernest Thompson Seton. Among the other works in which he appears are Irving's A Tour on the Prairies, Hough's North of 36, and Feikema's Conquering Horse.