Brachiosaurus is a general term for the "Brachiosaurus genus" dinosaurs of the Jurassic period. The body length is 25 meters, the height is 15 meters, the weight is 30 tons, the tail is thick and short, the head is small, the neck is long, and the appearance is similar to that of a giraffe. Brachiosaurus lived in late Jurassic North America and early Cretaceous North Africa. Mild temperament, enjoys living in groups. Feed on leaves and tender branches. Often foraging together. During walking, females lay eggs. Dinosaur eggs grew up alone without a nest or parental care. Brachiosaurus was one of the largest dinosaurs of the Jurassic period, and its name was once used by astronomers to name an asteroid.