Willy the dog loves winter, when he can run through town and up into the woods to see what other sorts of animals are about. Three siblings follow their dog and make a guessing game out of the tracks they see in the snow: Who’s Been Here? Outside the twig-framed illustrations are tracks readers can use to make their own guesses. The text also gives clues as to each animal’s identity, and a turn of the page reveals the answer. The animals in this northeastern forest and nearby community include a cat, turkey, fox, raccoon, rabbit, deer, moose, bear and skunk (an unfortunate run-in with which ends Willy’s romps with his child friends). Hayes’s tracks are clearly delineated, allowing young trackers to easily identify the ones they know and to recognize the ones that are unfamiliar. A subdued palette of blues and grays nicely suits the wintry setting. All in all, an enjoyable complement to Jim Arnosky’s Wild Tracks! A Guide to Nature’s Footprints (2008). (Picture book. 3-7)