This song seems to be about the Minamata disaster. Basically what happened was the fertiliser company Chisso dumped its waste products (containing a heck of a lot of mecury and other nasties) into Minamata bay (I suspect because it was cheaper). Well, anyways, the fishermen who used Minamata bay started eating the fish like they always had, and their cats did too. The cats showed the first signs of mecury poising, having smaller body mass, hence the song title. It was only a matter of time before the same affects started to be noticed in humans....
This song seems to be about the Minamata disaster. Basically what happened was the fertiliser company Chisso dumped its waste products (containing a heck of a lot of mecury and other nasties) into Minamata bay (I suspect because it was cheaper). Well, anyways, the fishermen who used Minamata bay started eating the fish like they always had, and their cats did too. The cats showed the first signs of mecury poising, having smaller body mass, hence the song title. It was only a matter of time before the same affects started to be noticed in humans....