I'm attempting to get used to not having an elderly cat that ate 754 times a day and still weighed nothing
New boy, I'm finding it hard to tell as he has a distinct primordial pouch and he's a big cat - tall, long, big frame
Weighed last at about 6kg. Last pic is of him next to a sort of standard height cat to show his frame
He does have a waist from above but the side view is kind of hard to work out from the pouch 
Wet food in the morning then dry (light food) as he vomits if he has dry before wet 