Quetzalcoaltus

The Quetzalcoaltus is the flying dragon of everyone's worst nightmares. It is known to be the largest flying animal that ever lived, with an estimated wingspan of 11 whopping metres. • And we hate to be the bearer of bad news but, the Quetzalcoaltus was actually a Pterosaur, which is a type of flying reptile- not a dinosaur. (They both lived during the same period though; although, that's like saying a toad and a human could be the same thing just because we both existed in the same period.)