The Tyrannosaurus rex, often called the T-Rex, was one of the most fearsome predators to ever walk the Earth. This "King of the Tyrant Lizards" lived during the late Cretaceous period, about 66 to 68 million years ago. Standing nearly 20 feet tall and stretching 40 feet long, the T-Rex needed a massive amount of food to power its giant body. But what exactly did this prehistoric giant eat, and how did it find its meals?
Scientists know for certain that the T-Rex was a carnivore, which means it only ate meat. Its primary menu consisted of other large dinosaurs. Fossils of creatures like the three-horned Triceratops and the duck-billed Edmontosaurus have been found with T-Rex bite marks on them. Some of these bones were even crushed, proving that the T-Rex had an incredibly powerful bite force—the strongest of any land animal that has ever lived. Its banana-sized teeth were designed to crunch through bone and rip through tough hides.
For many years, paleontologists have debated whether the T-Rex was an active hunter or a scavenger. A scavenger is an animal that eats creatures that are already dead. Some scientists believe the T-Rex used its large nose to smell rotting meat from miles away, much like a modern vulture. However, other evidence suggests it was a skilled hunter. Its eyes faced forward, giving it binocular vision to judge distances, which is a trait common in predators. It is likely that the T-Rex did both—hunting when it could and scavenging when an easy meal was available.
The T-Rex was the apex predator of its ecosystem, meaning it was at the very top of the food chain. Whether it was chasing down a meal or finding one left behind, this massive dinosaur was a master at finding the energy it needed to rule the prehistoric world. Studying its diet helps scientists understand how the entire ecosystem functioned millions of years ago.
