Mine is actually the opposite, he eats much more, and much more frequently than any BP I've had, and is hungry as soon as he pases a meal. A 15% body weight meal will be pooped in under 3 days. (Yes, he does look like he has a huge bulge in his stomach for about 48 hrs) I wouldn't worry as long as he goes back to his slim self a week after a meal, or once he has passed everything he ate. Keep a close eye on him.