Two of the five Rutiodon first appear during the beginning of the episode. They are seen chasing the Gang of Seven, ending up cornering Cera while the other six escape. However, before they can attack her, several rocks fall towards the Rutiodon, causing them to quickly flee to avoid being crushed. Cera, who had her eyes closed the whole time, believes that she chased the Belly Draggers away and tells the whole Valley, leading to them venerating her as a hero. However, the gang find three of the Belly Draggers near the Great Valley, and they soon enter it.
They attack Cera during the climax of the episode, cornering her at the edge of a cliff. They prepare to attack her, but her father comes to protect her, ramming one of the charging Belly Draggers, knocking it unconscious. They both yell, scaring three of the four remaining Belly Draggers, but one dull green Rutiodon is not intimidated and charges at Topps.
Topps stomps on it, and grabs its tail with his mouth and flings it into the air. The other three Rutiodon are scared and try to escape. Two of them get away, but the thrown Belly Dragger lands on top of the third one, knocking them both down. The rest of the Great Valley population later chase the two remaining Rutiodon out of the Great Valley.
- They are the only Belly Draggers from the TV series, the only Belly Draggers that hunt in packs instead of alone, and the only Belly Draggers that have ever gotten inside the Great Valley.
- It is unknown as to what happened to one of the Belly Draggers that had been knocked out; it may have been chased away by the Great Valley herd after waking up, or it could have ran away afterwards, knowing it stood no chance against the herds.