As I've mentioned before, our stray Henry is pretty big. He's a
long-haired cat, so he looks even bigger than he really is, but he is
overweight. http://frontpage.visi.com/~blink/images/Henry%20005.jpg
(to give scale, each tile that he's laying on is about 14 inches)

Because of his isolation in our current quarantine set-up, it's
possible to control his diet without starving the other cats (if they
all lived together right now, he'd just eat all their food).

He's about 17 pounds right now. It might be hard to tell from the
photo, but I'd classify him as "fairly overweight", not "morbidly
obese", but also not "a little chubby".

How can I determine how much to feed him? We're giving him about a 1/2
cup of Science Diet adult dry food, plus a 1/4 cup of wet treat-food
(organic, kitty health food from our local co-op).

I'm afraid part of his weight issues have to do with inactivity. He
may actually be depressed - another reason we thought he'd be a good
addition, since he was very playful outside, and we pictured him
chasing Louis happily through the house. He's pretty sedentary now as
a solitary cat - though he loves a paper bag. =)

How can I figure out how much to feed him?

His size, together with his long coat, have proved troublesome in his,
er, butt-hygiene, which is a severe irritation to all of us. =P

Thanks for any info.

BLink