Kaprosuchus was carnivorous, and would hunt its prey by either chasing them down or dragging them away (depending upon the circumstances), before killing them by ripping out the throat and later devouring the remains. Kaprosuchus was also aggressive from a very young age, as babies were known to snap their jaws at larger animals and to attack equally-sized fellow animals. Like most reptiles, Kaprosuchus had infrared vision.