Bumbu Brontosaurus, Baby

The Brontosaurus, a long-necked dinosaur that lived during the Late Jurassic period, and its behavior is notoriously difficult to study. However, based on what we know about other sauropods (the group of dinosaurs to which Brontosaurus belongs), it is likely that Brontosaurus parents provided parental care to their offspring.  Sauropods were known to lay large eggs, which suggests that they invested significant resources into reproduction. In addition, fossil evidence of nesting sites suggests that sauropods may have returned to the same site year after year to lay eggs, which suggests a level of parental investment.