We came upon these small tracks in the snow the other day. We believe it is from a small rodent. The snow is about a week old and at least six inches deep. The creature making these tracks could not be very heavy; their imprints barely sink into the surface. You can tell where we and others have disturbed the snow on the left. The animal was likely moving at a pace where their rear feet landed on top of the imprints from their front feet to make the interesting parallel track shown.