The natural world can be both beautiful and terrifying, and the study of prehistoric creatures provides valuable insights into the evolution of our planet's ecosystem over millions of years. But some of these extinct monsters will make you very thankful that they are no longer with us! From one of the largest predators to have ever existed on this planet, to a massive insect that will make your skin crawl, here are 20 Terrifying Animals You're Glad Are Extinct! ► For copyright matters please contact us: top5sfinest@gmail.com