Why is there so much shit on Wood St.?

I go to Point Park University and I walk Wood St. daily to get to the Playhouse. Now, you tend to see a lot of homeless people on Wood St.. It has the Commons, the bus stop, etc. and it’s usually not that outlandish to see a turd or two laying around, whether it’s from a dog or a human being. But I’ve noticed in the past month or so, that there has been shit EVERYWHERE. Almost every single grate on the sidewalk has shit smeared in it. And they are BIG. So either someone has been walking their big ass dog on Wood St. and just doesn’t clean up after themselves, or there’s a serial pooper lurking around. Either way, it’s gross. Please stop.