It's like walking by a pile of human feces on the sidewalk. You can explain it away and, well, "It's real. There are no restrooms here." It's like, no. They're on the sidewalk. Like, I'm against that.
The Australian marsupial can pass up to 100 deposits of poop a night and they use the piles to mark territory. The shape helps it stop rolling away. Despite having round anuses like other mammals ...