Gerald McBoing Boing first appeared in a few shorts produced by UPA back in the day, a secondary series, if ya will, behind the studio's #1 star, Mr. Magoo. The gimmick with Gerald was that he didn't speak. Only sounds came from this young fellow's throat, a peculiar oddity that no one can explain. Then again, this shouldn't have been a surprise if you knew that Gerald came from the pen of Dr. Ted Geisel, alias Dr. Seuss.
In 2005, Cookie Jar obtained a license to produce a new set of Gerald McBoing Boing cartoons, which aired in Canada on Teletoon, and here in the US on Cartoon Network as part of its ill-fated Tickle U block for preschoolers, an attempt by the network to compete with Nickelodeon's Nick, Jr. morning block, which has since been spun off into its own channel, and Playhouse Disney on Disney Channel, which eventually morphed into Disney Junior.
Unfortunately, only a small handful of episodes were produced before the plug was pulled. Here's the intro: