Underwater Race

1 The Tiny-saur Train 2 How Many Horns? 3 Mom Was a Kid Once, Part 1 4 Mom Was a Kid Once, Part 2 5 Gilbert the Conductor 6 A Clubhouse of Their Own 7 A Brand New Species, Part 1 8 A Brand New Species, Part 2 9 Don's Hole-iday 10 We're Not All Dinosaurs 11 Love Day 12 A New Leaf 13 Underwater Race 14 Buddy Wants to Fly 15 King and Crystal Play Red Rock 16 Nick of Time 17 Migration Vacation 18 Moms Rawk! 19 The Beelzebufo Cometh 20 Dennis Comes to Visit 21 Father's Day, Part 1 22 Father's Day, Part 2