It's puzzling me, cos they were the only set, what walks like that? Please don't let it be a cat, unless it's a bloody big un......
Ah whats the scale - they are the layout of squirrel footprints but if they are too big for that I have no idea
I can't help you with that but I did see something similar myself the other day. From my neighbours house a perfect 'set' of prints heading down the drive and onto the road and then the same coming back. The problem was there was only a right foot print. spaced out as you'd expect but without a left print anywhere to be seen on the outward or inward journey. And yes he's got two legs
http://www.naturetracking.com/the-5-most-common-animal-tracks-in-snow/ this would suggest a red squirrel