I've seen a lot of wolves, coyotes and dogs of many kinds....I'd not even venture a guess just from this photo, it walking away like that, but given how much more common dogs are than either wolves or coyotes, I'd place dog first likely.. Looking at the picture again, editing this comment in here, i'm going to settle on dog for one big reason, that's the end of the tail ihas an upward curl...wolves and coyote tails are absolutely straight or a smooth sickle curve throughout the length in some wolves...no curl toward the end like that. Many Malamutes and huskies have such a curl toward the end when they have their tail relaxed, dropped, not up over their backs.
As for the single foot walking, many dogs DO walk single foot..as for the broad jaw someone mentioned being wild, no plenty of dogs with that kind of jaw, Malamutes, for one. The round end brush tail, several dog breeds have that, again, Malamutes do. Lots of people mistake Malamutes for wolves or coyotes, even shoot them as such. I had a neighbor a few years ago, didn't know me well, or that I had an old Malamute dog, actually shoot at MY DOG while it was ON MY PROPERTY! Because he looked out across his own pasture, saw it in my pasture, which it wasn't usually, since i kept it mostly a house dog, and thinking it a wolf, shot at it, thinking I'd be perfectly happy for him to shoot a wolf on my place as well! He was already taking second aim when i cam flying out my back door screaming to my dog to 'come!' I knew the man was too far away to hear me...thank God the man saw me and that the dog was coming to me, becasue he was already lining up the cross hairs for another shot! That would have broken my heart, that was the last of my Malamutes I'd had so many years, a sweet 12 yr old dog that would never have hurt the man's cows and calve, had been around livestock all his life. But having Malamutes all those years, I KNEW that danger, many are mistaken for wolves.
Lots of Malamutes and huskies in wisconson, Btw, that's snow country.....lots of sledding and sled racing activities in wisconson.