Andy's Dino Island - Season 1 Episode 3 -

When Jen is carried away by a weather balloon, Andy sets out on an epic adventure across Dino Island to rescue her. Along the way, they meet the mighty Alamosaurus, a gigantic dinosaur that's as long as two double-decker buses! It comes to their aid when they get trapped on an island by an ancient crocodilian, called Deinosuchus, lurking in the surrounding waters.