When I was a kid in the early 50's my parents took me to McCarthy/Kennicott.  In those days the only way to get to the Kennicott mine was via a small gauge rail system on an open car pulled by an old Model A fitted with railway wheels.  Coming back from Kennicott a lynx crossed in front of us; his front legs were on one end of a railroad tie and his rear legs on the other end.  We stopped to snoop and the tracks that critter left were the size of dinner plates.  Must have been LOTS of food in the area!