This dog’s name is Mister. It’s spelled “Mr.” I took the photo of this guy cycling with his dog running on his fourth or fifth round of cycling back and forth.
Man in winter clothes cycling with his dog in the forest around Banff, Alberta
He was going back and forth with his dog, a couple hundred meters and turning around. He could have made a little circuit and go around the river, there are two bridges to make a little circle and the distance would have been the same. But no, he was just turning his bicycle around.
Later I saw the guy and asked him about his dog, then he went on his way.