Can we talk about poop for a moment? Specifically, raccoon poop in the wild.
It can provide... well, nutrition for other animals. But it can also provide parasites.
So some scientists set out to find out if animals would avoid raccoon bathrooms the way they avoid places where their predators hang out. An "ecology of fear" is the theory. Sara Weinstein at the University of California-Santa Barbara led the study; she visits with the details.