Where do you get "god believers don't believe in dragons" from?
The Bible is full of references to dragons:-
And Babylon shall become heaps, a dwellingplace for dragons,
Thou shalt tread upon the lion and adder: the young lion and the dragon shalt thou trample under feet.
And thorns shall come up in her palaces, nettles and brambles in the fortresses thereof: and it shall be an habitation of dragons, [and] a court for owls.
In that day the LORD with his sore and great and strong sword shall punish leviathan the piercing serpent, even leviathan that crooked serpent; and he shall slay the dragon that [is] in the sea.
We believe in Unicorns too:-
9 Will the unicorn be willing to serve thee, or abide by thy crib?
10 Canst thou bind the unicorn with his band in the furrow? or will he harrow the valleys after thee?
11 Wilt thou trust him, because his strength is great? or wilt thou leave thy labour to him?
If your special interest is to mock God and those who believe in him, you really should learn a little more about it, read the Bible or something.
As for "Are Dragons real?",
well, they certainly used to be, museums are full of their bones.
Nowadays they are called dinosaurs.