Largest Animals To Ever Exist On Earth. Size Comparison (PART 3) ► Subscribe: https://goo.gl/r5jd1F It’s time once again to explore planet Earth and go on an extraordinary adventure to ancient landscapes where colossal creatures once roamed. In this riveting exploration of prehistoric mammals, we'll unveil the mysteries of towering giants and predators alike. See the huge mammals that disappeared from the face of the Earth forever, as we go on a trip back in time where every fossilized bone tells a story, and every discovery unveils a chapter in the epic saga of life on our planet. From giant apes to an animal that was once thought to be bigger than a blue whale, get ready to witness the wonders of a lost world as we unveil the biggest prehistoric mammals to ever exist on Earth.