Allosaurus likely ripped off pieces of meat by yanking its head backward, similar to how falcons and other raptors dine.

Pachycelphalosaurus its skull was about 20 times thicker than most other dinosaur noggins, so its name makes sense—it means “thick-headed lizard.”

Spinosaurusmay have used its sail as a warning signal to intruders. The sight of the sail jutting out of the water would tell others to back off.