Electric spotlights can also exploit the Carnotauruses during the night or in complete darkness.
This could lead to interesting gameplay-sequences.
An NPC tries to shoot the Carnos while the player has to spot them with a lamp to reveal the targets to the NPC, who couldn't see them otherwise.
Or you are on a high-seat and you must guide an NPC from point A to point B, spotting the Carnotauruses on his way with a spotlight so the NPC could avoid them.
Or using a thermal-vision lens to find your own way through the jungle without running into a Carnotaurus along the way.
The possibilities are huge only with this single species.