I'll bite. How about the fact that all the animals and peeps were vegetarians. What kind of food stock would be needed to keep everyone fed? How long before the fruits and vegetables rot? Was there a greenhouse in the ark? Where did the bats sleep? Were extra mice brought on board to feed them? Were they allowed to fly around at night and catch mice while the family was asleep? Was every bird a "bird of prey"? What made birds become predator birds all the sudden - was that satan's influence? Was there like a huge, huge, worm farm to feed the birds?
So many questions. Only one answer - God did it.