I never did figure out why Bob got so fat! He's not fat, he's just "burly". Been neutered since he was 8-10 months old. He's now probably 2.5 years old. And beefy!
I asked him today if he ate another kitty & he meowed happily at me!
He likes a good tummy rubbins!
Someday, I hope to be able to find an indoor home for him.