Speaking of cats, I suspect that a neighbor cat sprayed odorous graffiti near the water dish and now the cats which live here are taking turns trying to cover the urine marking with their own version.

They aren’t very careful, so sometimes you look and the water is yellow.

I tell the cats that no one else does such things, but the truth is that humans do this all the time … we do it by dumping waste and toxins atop aquifers … the same ones that our wells draw from. We’re not even doing it to mark territory or recruit girlfriends. We’re just too lazy / too cheap to dispose of our wastes in less polluting ways.