Observation pen

The observation pen (sometimes referred to as the holding pen) is an enclosure in Prehistoric Park used to contain creatures recently transferred through the Time Portal and to observe creatures that have recently underwent enclosure transfer or surgery.

Uses
The observation pen is mainly used to contain creatures that have recently been moved into the park from prehistory. The pen is also used to contain creatures whose enclosure is being moved or modified, or to separate creatures that are hostile to each other. Notable examples of this are the numerous Tyrannosaurus rex fights. The observation pen is also used as a way to check on creatures with severe or infected wounds or creatures that have recently undergone surgery or any other medical procedure. A notable example is the Woolly Mammoth.

T-Rex Returns
When an adolescent Triceratops which was later named Theo entered the present, he was held in captivity in the observation pen where Suzanne McNabb came to see the park's first arrival until his home called Triceratops Creek was done.

Later, two Tyrannosaurus hatchlings who were later named Terrence and Matilda were held captive in the observation pen before being moved to their permanent enclosure called T-Rex Hill.

A Mammoth Undertaking
When Martha the Woolly Mammothentered the park, Suzanne and her assistant operated on an infected wound caused by a spearhead embedded in her shoulder. Sometime after the operation, Martha was able to walk again and she was subsequently moved to Mammoth Mount

When a male Elasmotherium was abruptly brought back to Prehistoric Park, he was locked inside the observation pen until his enclosure called Elasmotherium Paddock was ready.

Saving the Sabretooth
A male Terror Bird was sent to the holding pen before his enclosure was done. He also ate the meat from Nigel's plan to save the bird.