Two of each animal - plus seven of every clean animal. Let's not forget the Mosaic dietary injunctions centuries before "not-at-all-a-plot-hole" Moses.
At the age of five, Skagra decided emphatically that God did not exist. This revelation tends to make most people in the universe who have it react in one of two ways - with relief or with despair. Only Skagra responded to it by thinking, 'Wait a second. That means there's a situation vacant.'