Ankylosaurus

Ankylosaurus is a species of armored, herbivorous dinosaur that lived in North America during the Late Cretaceous between 68 and 65 million years ago and was described in 1908 by American paleontologist Barnum Brown. Members of the species are armed with a club on their tails, which they use to fend off hungry predators such as the fearsome Tyrannosaurus Rex. Despite their great strength, they are neither fast nor bright animals and they are known to have poor eyesight.