Terrence

Terrence is a male Tyrannosaurus that was rescued in T-Rex Returns. As such, he was one of the park's first dinosaurs, as well as Matilda's long-suffering younger brother.

T-Rex Returns
Terrence made his debut in T-Rex Returns. When Nigel Marven first found him and his older sister, Matilda, they were both half-starved, due to their mother's limited ability to hunt thanks to her injury. Their mother was about to feed them an Ornithomimus carcass, but a male Tyrannosaurus showed up. He wanted the carcass. The mother wouldn't allow it. The two adults engaged in a huge, violent fight. Matilda and Terrence both remained hidden, as the male would most likely kill them if they were discovered. Their mother lost the battle and was knocked to the ground, giving off one final roar, before succumbing to her injuries. The two babies were then orphaned. Miles away, the meteorite responsible for the KT extinction hit Earth. With the deadly shock wave only three minutes away, Nigel tried to lure the two Tyrannosaurus chicks with a sandwich, the only thing he had with him containing meat. The two dinosaurs hesitated at first, but then they both made a lunge for the sandwich, or Nigel, possibly because of the smell of the meat. They were both rescued and fed in the observation pens before being put into T-Rex Hill. Once there, Terrence and Matilda were given their names. However, the narrator noted that the two Tyrannosaurus would double their weight every year until reaching full-sized, turning them into the most dangerous killing machines in 65 million years.

A Mammoth Undertaking
In A Mammoth Undertaking, Terrence and Matilda were making up for their starved conditions in the previous episode. It is noted that they will grow until they are as long as a double-decker bus and weigh five tons. The two T. rex are seen multiple times throughout the episode eating.

Dinobirds
In Dinobirds, Terrence and Matilda have both grown tremendously in size. While Nigel is off rescuing a Microraptor, the two T. rex get into a fight. Bob and the team use a high pressure hose to split them up. The fight ends, but Terrence and Matilda have to be separated for their own good. They are both put into holding pens, while the team constructs a dividing wall in T-Rex Hill. Both Tyrannosaurus are disappointed with their new living arrangements.

Saving the Sabretooth
In Saving the Sabretooth, the dividing wall has been completed. Matilda and Terrence are put back into the enclosure. As Terrence approaches Matilda's half, she greets him with a hostile lunge. It appears that the wall could be a life-saver for Terrence. Matilda shows no sign of calming down.

The Bug House
In The Bug House, Nigel heads to the park to prepare for his arthropod-rescue mission, but is alerted by Bob to head to the T. rex enclosure. Matilda has just broken into Terrence's half of the enclosure. Terrence wants Matilda to leave. The two Tyrannosaurus then engage in combat. Being the larger and more aggressive of the two, Bob tranquilizes Matilda first. The dart hits, but, tranquilizers take time to work on reptiles. As Terrence tries to ready another attack, Matilda headbutts him to the ground. T. rex are known to have been cannibalistic. For Terrence, the dart may have come too late. Nigel then drives in, attempting to lead Matilda away from her brother. He is successful.

While Nigel is on his next mission, Suzanne's vet skills are being tested to the limit. Terrence has lost plenty of blood, and is in terrible shape. His most ominous injury is a large gash on his face as well as a bad infection. In fights, the head was a popular target for carnivorous dinosaurs. Even though it's recommended to use staples for reptile wounds, Suzanne uses stitches, so she doesn't have to reanaesthitize between surgeries. For the next twenty-four hours, Terrence's life will hang in the balance. Later in the episode, Suzanne checks up on Terrence in the observation pen. Terrence looks very ill and lethargic. His wound has become infected. Tests confirm that he has septicemia. It is risky to give him antibiotics, as Suzanne doesn't know how it will affect him, but, Terrence will die if they don't do anything. After Nigel has returned, there is great news: Terrence is okay. Later that day, he is moved back to his enclosure, where he should make a full recovery. Terrence also leaves Suzanne the "minor" job of cleaning up the surgery as it was trashed when he awoke. This can be seen as Terrence's finale, as he was not given a role in the next episode.