sentences:  Their adventures include riding their horses and entering them in competitions to test their skill and friendships.The show premiered on September 16, 2006 as part of CBS's new Saturday morning cartoon block, "KOL Secret Slumber Party on CBS" later "KEWLopolis" (now "Cookie Jar TV").Concurrent with the series, the online virtual pet game that it was based upon was updated to complement the show by launching a new "Junior version" of the game based on the program and featuring its various characters and locations.