Old Yeller is the title character of the film of the same name. He is a Mastador and a hero. At first, he causes trouble such as scaring Travis' mule, Jumper, and stealing food from his family, which angers him deeply. However, after Old Yeller saves Travis' younger brother, Arliss, from a mother bear, Travis changes his mind and grows fond of him. They become good friends and work together to keep the farm in order and safe. However, one night, when a wolf attacks, Old Yeller is bitten during the fight and gets rabies as a result. Travis is distraught about this, and reluctantly has to shoot him to put him out of his misery. Afterwards, he makes a grave for him and buries him in it, then he starts raising his son, Savage Sam, planning to make him just like his father.