Apocalyptic Lion eating animals butt first

I picked up Roen from Animation camp, he showed me a drawing that he'd done with oil pastels. All the kids had done large, close-up pictures of animals that were very colorful and pretty. Roen's was very different than the rest. He had more of an apocalyptic scene with a lion eating a pig's butt and then it's poised to move on to a gorilla's butt followed by a goat's butt. There's a carcass off to the side. I wonder what his teacher thinks. I wonder if she recognizes the style is sort of Narnia/Captain Underpants.