![](https://lemmy.today/pictrs/image/817e51c0-c1be-4c74-8884-fd73d6631b2b.png)
![](https://lemmy.world/pictrs/image/c47230a8-134c-4dc9-89e8-75c6ea875d36.png)
https://en.wikipedia.org/wiki/Wombat
Wombats leave distinctive cubic faeces.[9] As wombats arrange these feces to mark territories and attract mates, it is believed that the cubic shape makes them more stackable and less likely to roll, which gives this shape a biological advantage.
The engineering prowess of the beaver, Australian-style.
I bet the image of one surrounded by poo constructions makes them less-appealing.
https://www.smithsonianmag.com/smart-news/scientists-have-solved-mystery-how-wombats-poop-cubes-180976898/
I imagine it depends on whether the opposite gender finds walls sexy or not. I don’t have a good feel for wombat aesthetics. Maybe they’re into pyramids.
EDIT: This looks more like Stonehenge-level construction than Great Wall of China stuff going on: