Genesis 7:2-3, 8-9

Take with you seven pairs—male and female—of each animal I have approved for eating and for sacrifice, and take one pair of each of the others. Also take seven pairs of every kind of bird. There must be a male and a female in each pair to ensure that all life will survive on the earth after the flood.

With them were all the various kinds of animals—those approved for eating and for sacrifice and those that were not—along with all the birds and the small animals that scurry along the ground. They entered the boat in pairs, male and female, just as God had commanded Noah.