The Triceratops tractor was a tractor modified by Head Keeper Bob and his team. The vehicle, which was an imitation of an actual Triceratops modified with tubes and tires, was used to help Theo let out his aggression as he began to mature.
In Prehistoric Park[]
T-Rex Returns[]
After seeing Theo letting out his aggression on a tree, Bob got the idea of building the Triceratops tractor to help Theo out. Bob then spent every minute of his off-period constructing the Triceratops tractor with the aid of some park workers, and once it was finished, he drove the modified tractor down to Triceratops Creek. Upon arriving, he, along with Nigel, then entered the paddock and engaged in a jousting match with Theo, making sure to let him win to avoid inflicting injuries on him.