How to feed and keep the animals on the Ark?

Noah or one his family members wrote the book of Genesis. If they put all of the animals they knew about on the ark, to them this would be ALL animals, since they didn't know about elephants. If the flood covered everywhere they knew about then they'd probably assume this was all the world. Forty days of rain certainly would not submerge Tibet.
Also: I think Noah used tree bark.If you feel the need top make some irrelevant smartass comment and end it with a smiley face in reaction to this post you can do that, and I'll even humour you and pretend to be upset. Then we can forget that your dogma (Darwinism, cynicism, skepticism) may be wrong and you can feel special.

Clarifications and Admissions1.)Not all of the book but if it's true then stories of creation and the flood would have to come from someone on the ark, because Noah's neighbour's either drowned or starved after their crops were destroyed.2.) Tree bark to build the ark. I wasn't serious though, it's in this song you have to sing if you go to a christian church when you're little.Also: Crashfrog, I suppose you're right. Skepticism is a bad word. I'm talking about those people who hate authority and refuse to believe anything people in charge tell them. Like those crazy people who meditate in crop circles, and satanists.