Tyrannosaurus rex was a powerful predator capable of bringing down heavily defended herbivores such as Triceratops, but fights with animals that size carried serious risks. Fossils show tyrannosaurs sometimes survived broken ribs, damaged jaws, and deep bite wounds, because many injuries healed during life. Some wounds show signs consistent with infection, but ideas like deliberate wound cleaning, including using water, cannot be confirmed from fossils. Adult tyrannosaur behavior is still poorly