Topic: The mystery of Yoshi and Dr. Seuss

This is a bit of an odd topic, but couldn't find anything online about this random bit of trivia. Hoping someone here knows a little more about music.

For context: Yoshi games typically have a "main" riff that carries over into different songs. It's no surprise that Yoshi's Island DS has its own leitmotif that plays in most levels, but...

...can anyone explain why it sounds so much like this song from Dr. Seuss's Pontoffel Pock?

You could write it off as coincidental, sure. But in Pontoffel Pock, the tune specifically plays for a beach scene. Yoshi's Island DS plays it constantly throughout an island. This suggests that it's a Regional Riff from some song in the public domain (like the one commonly associated with East Asia).

But which specific piece or song does this bit originate from? That's what I'm searching for. Any insights?

That's a good question... It reminds me a bit of the main theme from Final Fantasy Fables: Chocobo Tales but it's different enough that that's probably a coincidence.