Gulliver's Travels is a classic novel by Jonathan Swift, first published in 1726. The novel follows the adventures of Lemuel Gulliver, a ship's surgeon, as he visits various strange lands. In the novel, Gulliver encounters a race of brutish creatures called YAHOOS, who are described as being primitive and animalistic. They are contrasted with the more civilized and intelligent Houyhnhnms, a race of intelligent horses. The YAHOOS represent the worst aspects of human nature, and their presence serves to highlight the folly of mankind.