Sauropods were the largest land animals to ever walk the Earth, with giants like Argentinosaurus stretching over 30 meters long and weighing more than 70 tons. Yet, despite their enormous size, they began life from surprisingly small eggs, no bigger than a football, leaving hatchlings extremely vulnerable in a dangerous world. Their long necks, some reaching up to 15 meters, allowed them to browse from the tallest trees, but research also shows they likely swept them side to side to graze low pl