Finally, after much feeding, the baby has grown into a full Dino! Dinos can eat almost anything, including things with spikes. In order to do so, they must have very tough stomachs.

The Birthday Dinos arrived as eggs in Lagie's caves after Lagie made a special trip on her birthday to the local marketplace. The plan was to bring some cheer to the caves during that time worldwide when all the humans in all the caves had to spend a protracted amount of time at home alone in order to prevent the spread of a highly infectious virus. Well, things didn't quite go as planned. The eggs hatched together. The hatchlings grew up together... and the adult dinos stayed together, sharing an oversized cave off the beaten path where they wouldn't be bothered by too many people or dragons.

Stegosaurus is the group's storyteller. She's the only one who ventures out and interacts with others, though not very often, just enough to collect new stories to bring back home with her. She brings recipes from Kit for Triceratops to try out, and her amazing memory means she's able to recite the lines from William's plays using all kinds of different voices for the different characters.