The Rise and Fall of the Tallest Mammal to Walk the Earth
Season 3 Episode 26 | 7m 53s | Video has closed captioning.
It arose from rhino ancestors that were a lot smaller, but Paraceratherium would take a different evolutionary path. Believe it or not, it actually became so big that it probably got close to what scientists think might be the actual upper limit for a land mammal.
Problems Playing Video? | Closed Captioning