. . . . . . . . . . "The Ballad of Big Al (distributed in the North American market as Allosaurus: a Walking with Dinosaurs Special) is a combination biography-sequel for Walking with Dinosaurs . It focuses on an Allosaurus (Allosaurus fragilis) named Big Al and his constant struggle to survive in a world filled with danger."@en . "The Ballad of Big Al"@en . .