Man, some of you sure are taking a lot of power away from God. What about the account of leviathan and behemoth in Job?(and before you say behemoth is a hippo, look at the description of the tail and tell me you have seen a hippo with a tail like that)
I don't know how all the animals fit on the ark but it says some of each "kind" got on. Kind of like how do we have black, white, hispanic, asian, etc people out of just Noah and his family. God is all powerful and can do things we don't understand, we just have to believe He did it. That is part of pur "faith", believing without seeing.