Yoshi is a dinosaur who made his debut in Super Mario World as a steed for Mario. He has a very long, stretchy tongue and will eat just about anything he sees. In Yoshi's Island he was given the ability to turn any enemies he had eaten into explosive eggs and throw them. Although most of would say that Yoshi is held back by Mario and Luigi, Yoshi's Island has sold quite well, and is believed by many of Yoshi's fans to be the greatest video game ever made. It is unclear exactly what species of dinosaur Yoshi is. In Super Mario RPG, they were called Yo'sters, but it appears that Nintendo has dropped that name since.