I think the tracks are too small to be a full grown wolf. That print is 3 inches by the measuring tape. The claw marks start at the 1/2 inch mark and the bottom of the heel is right at the 3 1/2 inch mark. I once had a wolf shepard cross (rescue) who weighed in at 119 lbs and his feet were 5 inches long toe to heel pad, not counting the claws. Wolves have big feet, much larger then dogs their same size. The overlap is more a guide then a hard and fast rule, just as the walking in a straight line is. A wolf checking theings out will wander, walk slower and his tracks won't overlap. A long legged dog moving at a running walk on a scent will go in a straight line and take longer strides and thus overlap his tracks.
I vote for big dog.
I vote for big dog.