I feel that Littlefoot is also a good focus when examining falls. I take a lot of notes when watching the media (the movies and episodes), and from my observations, I had written this:
"He falls a lot, as he tripped on a rock in The Brave Longneck Scheme, Invasion of the Tinysauruses, and The Secret of Saurus Rock, and on a root in Escape from the Mysterious Beyond. He also fell while crossing a vine in The Stone of Cold Fire and walking across some stones in Journey Through the Mists twice, once on water and the other in a cave."
Not a lot of misfortunes can happen in a dinosaur movie compared to a human one. Dinosaurs can't leave an oven running nor forget to take out the dog nor spill hot coffee on their pants. With limited accidents to have, they, I assume, were somewhat forced to be repetitive with what accidents a dinosaur could have, such as stumbling.