Ferocious or Friendly? Originally, dinosaurs must have been harmless--designed to delight man and benefit the world, just like all the other animals. When first created, all dinosaurs ate only plants and fruits. After the Flood, dinosaurs and all other animals were made to be afraid of people (Genesis 9:2). Looking at the fossils, it appears that most dinosaurs were still harmless plant-eaters at that time--many hundreds of years after the Fall.
Read the quote. God designed the dinosaurs to delight man. I'm sure at one point in time everyone had happy happy dinosaurs as pets. You can't have a happy pet dino without a collar and a smile. Man's sin drove animals to become carnivorous.
The Bible tells of a great flood that covered the entire earth--Noah's Flood. This was the greatest disaster in history. Nothing else has even come close. The Flood waters rose above all the world's mountains and killed most of the air-breathing, land animals and all but eight people in Noah's family (Genesis 6:12-13, 7:21-23). It destroyed the entire surface of the earth (Genesis 9:11).
Great supplies of water stored underground came bursting out (Genesis 7:11, 8:2). The earth's crust heaved and buckled unleashing terrible volcanic eruptions and massive earthquakes like the world has never seen before or since.