Diet for FATSO

I guess I have to put FAT Curly on a diet.
http://home.comcast.net/~cliff-f/photos/index.html

 I am wondering how often or LESS often would be healthy for this tub of
lard. I guess I will also have to seperate him from Larry also. It seems he
is probably getting first dibs on everything as he is most likely the
domanant creature going by size anyway. Any comments?

Thanks
Proctor