between this one and http://www.poetv.com/video.php?vid=55269, it seems to me that the Japanese have no idea that SEEDS ARE BAD FOR GUINEA PIGS! Dozens of guinea pigs in the Pacific Northwest alone die each year from choking on these shell fragments.
I always heard they were bred up into their current form to serve as a food source for Spanish sailors on their way to the new world. No idea if that's true.