Genesis 6:12

And God looked upon the earth and saw that it was corrupt; for all living creatures on the earth had corrupted their ways.

Note Literally all flesh; similarly in verses 13, 17, and 19

And God looked upon the earth, and, behold, it was corrupt; for all flesh had corrupted his way upon the earth.

God saw the earth, and saw that it was corrupt, for all flesh had corrupted their way on the earth.

And God saw the earth, and, behold, it was corrupt; for all flesh had corrupted their way upon the earth.