The Rock Pygmies
While escaping from a sabretooth tiger, Dino Boy accidentally falls from his riding perch upon Bronty and thus is separated from his pet. Soon after, Bronty is captured by a marauding tribe of Rock Pygmies who seek to make the baby brontosaurus their slave. Dino Boy tracks the Pygmies to their lair, and after being reunited with his pet, they run to escape...but are blocked by an avalanche. Just when the duo are cornered with no hope of escape, Ugh makes a timely appearance, along with Tusko the wooly mammoth, and they proceed to have sport of their own with the hapless Pygmies.