Futalognkyosaurus is one of largest saurpods and dinosaurs that has existed. Like all saurpods they have little predators when they are fully grown, but when they are young that is when they are targeted by predators. Its best defence besides its size is its weight, by standing up on its back legs it can crush a another dinosaur. Its second weapon is its tail which can be used as a wip, and its final weapon is its neck which they can use to knock a predatory away. These dinosaurs live in heards, of young male and different ages of female. The leader is a older female called a matrearck. Baby Futalognkyosaurus are born alone and have to fend for them self until they find a heard.