Question for those who think the descriptions of behemoth and leviathan in the Bible are hippos and crocs?

I've heard quite a few Christians here and in real life suggest that the descriptions of the Behemoth and the Leviathan in the Bible were actually attempts to describe hippopotami, crocodiles, or similar mundane animals. If you believe that, with such fantastic desriptions (like breathing fire and laser-like eyes) how does that affect your view of the Bible's description of other things that are less readily observable, such as Heaven, angels, gods, Hell, etc?