The dinosaurs were intended to have a complex AI controlled by an emotion system. However, the dinosaurs had rapid mood swings, sometimes switching behaviors so quickly that they just stood in one place and twitched. Not having time to fix the system, the developers worked around it by disabling most of the behaviors and increasing their anger and hunger levels.

In the Industrial Jungle level, there are a few raptors that the developers missed. One of them will walk around, but won't attack the player. Two more appear later in the level that will follow the player and sniff her, but will attack her if they are attacked or hurt themselves.