Numerous Na'vi warriors attempted to kill the animals inside, and by the time Able Ryder arrived several of the warriors were fighting in the entrance, using a dead hammerhead titanothere as cover. Beyda'amo instructed Ryder to kill the "abominations" created by the experiments, which included two thanators.
DBI Trackmate has had its hand in creating the Rehabilitation Center. Its logo can be seen on the back of the labels on the fences if the player manages to climb out of the stage. Trackmate are also known to have produced the Trackmate Microscope.
Edit
