This is a photo of an animal sign, and more specifically the tracks of a Fisher. The Fisher has a similar size to a domestic cat and has dark, thick fur which helps regulate the mammal's internal temperature in the winter time. Similar to a Lynx, the Fisher's paws are disproportionally larger than its legs, which help it walk easier on snow -- kind of like snow shoes. Although this photo does not depict it very well, the paws of a fisher have claws which also help it navigate through its environment. What I find most interesting about this photo is its rarity -- Eileen was stoked that we found its tracks, and we even followed them for 15 minutes or so in an attempt to witness a sighting!