Why is this cat making such a weird noise?

If you've got a cat, I'm sure you've heard it make some pretty strange noises before.

Furballs never sounds like fun!

But has your cat ever made a sound quite as bizarre as this?

This kitty in Tokyo in Japan is called Chobimaru, and his owner says the cat makes this sound "when he's cranky" because he's being spoken to in a low voice.