Throughout history, our planet has been home to some colossal creatures. From prehistoric animals, like dinosaurs and wooly mammoths, to today’s modern giants like blue whales and elephants. While there are large animals that most of us are aware of — whales, giraffes and gorillas — there are some giant animals you may have never come across and may not want to, for that matter. Here are five unusually large animals you probably haven’t heard of.