 Because they were deemed as too frightening or could even cause  psychological damage to young children, about 19 scenes, mostly  pertaining to the Tyrannosaurus Rex, and the five characters in mild  peril or distress was cut or trimmed. Don Bluth was unhappy with the  cuts, and fought to keep the footage, but felt like he had to do so,  making this film only 69 minutes, one of his shortest.