30 Important Dinosaur Facts You Just Shouldn’t Miss

Walt Disney thought the Tyrannosaurus Rex wasn't scary enough with two fingers. He demanded a third finger be added in all artistic depictions.

A 2006 study concluded that prehistoric predators had excellent vision, surpassing modern birds of prey. Compared to a bald eagle (whose vision is 4 times better than ours), Tyrannosaurus rex had eyes that were 13 times as precise as a human's eyesight, meaning it could see prey from 6 km away.

One of Tyrannosaurus Rex's "tiny" arms could curl 430lbs.

Scientists have discovered fossils of pygmy tyrannosaurus rex that would have roamed Arctic during the late Cretaceous period.

Deep in Africa, there are accounts of people seeing dinosaur-like creatures that resemble a Brachiosaurus or Apatosaurus. The locals call it Mokèlé-mbèmbé and there have been several documented expeditions to find it from as early as 1776 to as late as 2012.

Herbivore dinosaurs had to eat leaves instead of grass, because grass (a C4 plant) didn't evolve until 10 million years ago.

Earth's rotation is slowing at a rate of approximately 17 milliseconds a century, and the length of a day for the dinosaurs was closer to 22 hours.

Saturn’s rings are younger than the dinosaurs as they were likely formed just 100 million years ago.

The dinosaurs far pre-date Betelgeuse, one of the brightest and most famous stars in the night sky. In fact, the star was born around the same time as pre-humans walked the Earth.

Dinosaurs had giant fleas with beaks the size of modern syringe needles.