The Biggest Animal That Ever Walked Hatched From an Egg You Could Hold

The largest animal that ever walked on land hatched from an egg you could hold in one hand. Not because it grew slowly at first — because there is a hard physical limit on how big an egg can be, and sauropods were already up against it. This video works through what that single constraint did to them: why parental care was impossible, why the biggest animals in history reproduced like sea turtles, why that turned out to be a strength rather than a weakness, and how an animal crosses a gap of several thousand times its own birth weight in about twenty years. Stories on Bones takes one animal at a time and works out what it cost to be built that way. Every frame is painted for the video. No stock footage. Sources in the pinned comment. #sauropod #dinosaursurvival #paleontology #brachiosaurus