There's actually a rational explanation for this drawing.

I was playing Zoo Tycoon at the time and visited a forum where some posters had made mods for the game. One of the mods was reversing the food chain, meaning the herbivores would attack and eat the carnivores if placed in the same exibit. I tried to find the most ridiculous herbivore-carnivore pair I could think of and made this pic.

Actually, I think an anteater eating any carnivore would be hilarious.