Word goes out that there's going to be a trip back with the new mammal to learn a whole lot of new and exciting things, and dinosaurs come running far and wide to join you on your way back through the cave. You all travel together swapping stories about how great warm-bloodedness is, and how annoying reptiles are, always laying on warm rocks. You arrive back at the festival and are ready to teach the dinosaurs the important stuff. Like how to party. Other stuff, too, for sure, but for now, party.