D&D Basic Monsters: Riding Horse

Hardly a monstrosity, but the trusted companion to many a hero. The horse was domesticated by humans over 5000 years ago, and during the medieval era they were one of the most important animals to humans, used for warfare, labor, leisure and warfare - a task it continued to uphold until the 19th century.

Both history, literature and myth are filled with famous horses, like Bucephalus, Alexander the Great's horse, or Rocinante - the trusty steed of Don Quixote.

It it of course no wonder the horse has been a part of D&D since the beginning - though more frequently as part of "equipment and gear" lists, than as monsters faced by adventurers.