Petrie: Me trying to bite off Spike's tail for experiment. Experiment of science.
Spike: Huh?
Littlefoot: What is, "science"?
Petrie: Is study of things. Like falling leaf. That is gravity. Us dinosaurs fall towards the earth because of it.
Cera: Who told you all of this?
Petrie: Uncle Pterano! Pterano told Petrie that if creature tail fall off, it grow back again.
Mr. Thicknose walked towards the group.
Mr. Thicknose: Oh no, that's completely wrong. Only little crawlers can have that happen to them. Same with the scaly nofooters.
Petrie: Why Petrie is always wrong about things? Wait. I made a science. Petrie proved himself wrong by biting Spike's tail.