Dr. Seuss's Horton!·Netflix
All episodes
2 seasons · 13 eps
Season 2
Star Search & Horton Helps a Caterpillar Episode 2
The Twinkleberry Tree & Runaway Stuffie Episode 3
X Marks The Spot & Message in a Bottle Episode 4
Nool Grand Prix & Baby on Board Episode 5
Fish Out of Water & Hiccup Trip Episode 6
6 episodes in Season 2
Some details come from TheTVDB.