this is for a kids show, probably. he's a tv comedian on many different shows. the words he's singing are a well-known kids song, "inu no omawari-san" (mr doggy cop). it's about a lost kitten being helped by the dog policeman.

so it's a little bit like the sesame street rock song parodies, like "letter B"...

That show is crazy. Stupid Sportacus. And stupid catchy kid songs. Arrrr! I'm a pirate!