Screaming Skulls Screaming Skulls Concepts learned through this PBL case. Nocturnal animals are active at night.
Diurnal animals are active during the day.
Placement of the eye socket can indicate whether an animal is nocturnal or diurnal, predator or prey. Large eye sockets aid in night vision 6. Predators require frontal vision. Predators are animals that eat other animals. Other animals eat prey.