Now we know dragons are just that fantasy.

But if these colossal creatures did exist in our world, could they really get off the ground?

If you look towards the sky around 70 million years ago, you might have thought you saw a dragon.

Back then, enormous flying reptiles called giant pterosaurs ruled the skies.

Their wingspan was nearly as long as a telephone pole and at least one species Kettle Co Odalis North ropey stood as tall as a giraffe and weighed 300 kg.

That's 15 times the size of the heaviest flying bird.

Today, the Kori bustard giant pterosaurs may be the closest real animals to the dragons of Westeros.

So if they could fly, surely Danny's dragons could too, right?

Well, not exactly.

Let's consider the mechanics of flight.

The hardest part of flying is taking off, and for most animals, that requires speed because the faster you go, the more lift you generate, which literally pulls you into the sky.

Most animals, including Catholic Odalis gain speed to take off by jumping into the air.

And the heavier you are, the more power you'll need in your jump now.

Kettle Co Odalis got that power using its back legs and wings.

They doubled as front legs so we could push off the ground on all fours.

And Danny's Dragons actually use the same approach, so you'd think they'd have no problem taking off.

But there's one key difference.

Dragons are thousands of times heavier than even the heftiest terrorist source.

So even with a four legged launch, Dragons thighs would have to be way more jacked than they appear here to push his weight off the ground.

Maybe flapping his wings really hard could help.

Probably not.

Dragon's wings are actually small relative to the size of his own body.

In fact, his wings would need to be about twice their current size toe work, and if they were, they'd be much too heavy to move, let alone flap, unless he had iron biceps to match those thighs.

But that would lead to yet another problem.

Those powerful muscles needed for takeoff would put an equally powerful force on the bones that support them, so unless they were thicker, they'd likely break.

But here's the thing.

Thick bones also weigh a lot more, so these dragons would either have bones that air too heavy for take off or bones that air too fragile to fly.

Either way, they're not going anywhere.

That being said, all is not lost for our fire breathing friends.

We've assumed they're made of the same stuff as other animals.

But what if their muscles and bones were made of something else?

Some special, extra strong material, perhaps?

Ah, medal that already exists in Westeros.

Valerian steal.

It makes perfect sense.

After all, who comes from malaria?

That's right, Dragons.

And they're tar Gary in writers.

So all in all, could dragons fly in real life?

Maybe not on Earth, but in West Rose, with the help of some magic metal, that sky's the limit.