Paunch
Observe Leo's emerging paunch in Figure 1.1. It isn't obvious on this photo but most of the time we can see Large bulges oozing out from his sides when he sat or laid down. He has been over eating and weighs 6.6 kilos now. Moon has a habit of eating a little at a time, so often he would go up to Moon's bowl and conveniently finishes the food on her behalf. The vet was incredibly amused by how fast he gained weight, then commented that cat obesity is a real danger.