The Tetrapodophis is a minor antagonist in The Good Dinosaur.
The Good Dinosaur
The Tetrapodophis appears when Spot found berries on a tree. Arlo tries to grab them but a Tetrapodophis on the tree falls on top of Arlo, resulting in them falling down the mountain. At the bottom, the angry Tetrapodophis tries to attack Arlo, but Spot fights and defeats it, resulting in the Tetrapodophis retreating, leaving Arlo and a nearby Styracosaurus named Forrest Woodbush amazed by Spot's strength.