Yakkity Yak.

Yakkity Yak is an Australian/American/Canadian animated television series created by Mark Gravas that ran on Nickelodeon from November 9, 2002 to December 12, 2003. The show was known for its extreme lack of reality, and for its extreme silliness and featured a style of animation which broke with past Nickelodeon tradition. The show features an anthropomorphic yak named Yakkity who wants to make it to stardom by becoming a comedian. Along the way, he has adventures with his two best friends Keo and Lemony, a young human girl.