Mean Cuisine

I’m pretty sure most monsters are plants, trolls especially because they’re even green. Monsters get most of their nourishment from sunlight and soil. Expect for subterranean monsters that must be fungi or something…

You almost never see monsters eating. After all, how do dungeons include a larger or kitchen area? Bathrooms are also rather rare. And with the amount of a food even a huge dragon would need consume to stay alive, it would have a huge mound of something in its lair, but not likely treasure.