Why No Giant Mammals?

For more visit YouTubesFinest.net <br /> <br />Hank gives a quick run-down of the reasons scientists think the land mammals of today are nowhere near the size of the largest sauropods. Some of them might surprise you! <br /> <br />Like SciShow? Want to help support us, and also get things to put on your walls, cover your torso and hold your liquids? Check out our awesome products over at DFTBA Records. <br /> <br />For more visit YouTubesFinest.net