Mad Toy (original title: El juguete rabioso: "The rabid toy") is the first novel of Argentinean author Roberto Arlt. Published in 1926 by Editorial Latina, it is markedly autobiographical in nature. The original manuscripts were written in the 1920s and were drafted by Arlt in the mountains of Córdoba, in a time when his wife, Carmen, who suffered complications from tuberculosis, needed to move to the mountains to recover from her illness. Arlt invested a considerable amount of money in businesses that did not grow, and had to accompany his wife, so he began work on Mad Toy.