The advantage of letting a dog run off leash, from the owner’s standpoint, is that you don’t necessarily have to know when and where they poop. Judging by the size of its feces, this dog was a Great Dane, or something similar. It deposited its calling card right next to the busy paved trail on the west side of the park, near one of the benches. The owner left it there.
Shame on the owner! Owners like that we do not need in the parks.