The Dragon's Hunger

You whimper and begin running, towards the mouth of your cave. You hadn't noticed how small the exit was until now. Your gait slows to accommodate the added weight around your midriff, and you pant as you near it. Closer.. Closer.. Wait.
You can't move.
You can feel your gut pressing into the sides of the cave mouth, getting tighter and tighter with each breath as rolls of doughy fat are added underneath your scales. Confidence wavering, you look back and see the stone beginning to crack around your hide.