T. rex Kingdom , code named Paddock 9, is the enclosure for the Tyrannosaurus rex named Rexy, who was originally created for the failed Jurassic Park, in the Jurassic World park on Isla Nublar. It is one of the park's most popular attractions. Feeding is every two hours. They feed her goats and attract her with flares so guests can see her eat in a log-like viewing area or visitors can choose to view her in an upper seating area at the top of the arena. Visitors can assist in the feeding of the Tyrannosaurus by purchasing the Adrenaline Package or possibly the Apex Predator Package.
During the Isla Nublar Incident of 2015, Claire Dearing commanded Lowery Cruthers to open the doors to the paddock when her nephew Gray Mitchell suggested that they needed another combatant in the final battle against the rogue Indominus rex. She used a flare to lure Rexy out of the paddock and into Main Street. The paddock soon became uninhabited by the T. rex as she became free to roam the island after the fight with the hybrid.