Looks like those pointy type coyote ears and nose. Hard to judge size and scale in the pictures. If this dog is really big then I'm guessing maybe wolf but I admit I don't really know my wolves, only seen one in the wild and I remember it to be very tallish looking and strikingly very big. This dog however looks like it's just big, like the typical type of coyote we see and call around here (Hamilton region) and points north of here up to Georgian Bay. We also see the smaller versions, maybe younger ones, so it's not as though they are all big but the bigger dogs do show themselves