Dinosaurs? He stopped believing in God because the Bible doesn't mention dinosaurs? The Bible doesn't mention a lot of animals, many of which existed (and still exist) in the Middle East. That the Bible doesn't mention dinosaurs (a word, incidentally, that wasn't coined until the 19th Century) is not at all unusual. The Bible doesn't mention the crocodile, the elephant or the hippo, either, though they undoubtedly were all known by the authors of the books of the Bible.