[3] And there appeared another wonder in heaven; and behold a great red dragon, having seven heads and ten horns, and seven crowns upon his heads.
[4] And his tail drew the third part of the stars of heaven, and did cast them to the earth: and the dragon stood before the woman which was ready to be delivered, for to devour her child as soon as it was born.
[5] And she brought forth a man child, who was to rule all nations with a rod of iron: and her child was caught up unto God, and to his throne.
[6] And the woman fled into the wilderness, where she hath a place prepared of God, that they should feed her there a thousand two hundred and threescore days.
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Chapter and verses where u can find dragons in the bible