Pat is an old Apatosaurus, who offered to look after Littlefoot's friends on their way to the crater in The Land Before Time X: The Great Longneck Migration. When they realize they cannot make the journey by themselves, Pat finally looks after them. His leg was severely burned from erupting lava after telling the longneck creation myth to the gang; they help Pat get up. When they arrive at the crater, he helps defend the other children against three sharpteeth. At the end of the movie, the children ask him to come with them to the Great Valley, which he slowly accepts. He has not appeared since in the further sequels.
Pat is shown to be a lonely traveler, as he offers twice to look after Littlefoot's friends, takes a different route to the crater, and does not travel with a sauropod herd. He is gentle, but because of his age he is physically weak.
- Pat was voiced by James Garner, who also voiced Commander Rourke in the Disney film Atlantis: The Lost Empire.
- Pat's name is a reference to his species, Apatosaurus, just like Bron is a reference to Brontosaurus, a related sauropod.