Dear Human Female,
I just want to let you know, my diet has been very effective over the past few months. I've been much more active lately. I even jumped onto Human Male's desk yesterday from the floor, and I could tell that really impressed you. So you can probably feed me a little more now. I can't help but notice you eat three meals a day, and I only eat two. Maybe Human Male could share some of his lunch meat. And milk. Those are good sources of protein and calcium for me. You wouldn't want me to become malnourished.
p.s. You know, in some cultures, corpulence is a sign of prosperity.