Genesis 7  verses

2 Of every clean beast thou shalt take to thee by sevens, the male and his female: and of beasts that are not clean by two, the male and his female.

 3 Of fowls also of the air by sevens, the male and the female; to keep seed alive upon the face of all the earth.

Like a lot of the Bible stories, what you are taught, is not what is written in the Scriptures

Examples

What animals were present when Jesus was born  = no animals mentioned at his birth

Exactly where was Jesus born = absolutely no mention of any Stable

Wise men ? Nowhere is it mentioned how many of them there were