I like the idea, but I also don't understand why it has to be specifically grizzly and not (brown) bear. I don't see that much of a difference between their ears. I got it at the end, but I still don't see the point.
If you want to get technical about it, those “ears” in the long-eared owl example are just feathered tufts, not actual ears. Might want to add a disclaimer saying “Includes ear-like appendages.” I recognized the animal anyway, but still.