Why No Giant Mammals

Hank gives a quick rundown 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 If you liked this video, check out more videos about natural history and paleontology on SciShow s sister channel, Eons: 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: dftba.