The first three volumes were released on VHS in December 6, 1991. On May 2, 2006, Walt Disney Studios Home Entertainment released Dinosaurs: The Complete First And Second Seasons as a four-disc DVD box set. The DVD set includes "exclusive bonus features including a never-before-seen look at the making of Dinosaurs ". The complete third and fourth seasons, also a four-disc DVD set, were released May 1, 2007 with special features, including the episodes not aired on US TV. Both sets are currently available only in Region 1 .