I'm not sure if this exists. I'm looking for a picture of a lion looking sadly at a fake savanna painted on the wall of a zoo.

It may not have been a lion.
It may not have been a savanna.

I'm sure this picture exists somewhere. I think i saw it on 4chan. I'm pretty sure the anti-coomers put it in their info graphic.

I've thoroughly checked Yandex and Google. If you can help I'll timestamp a sfw request.