People aren't the only ones making tracks in the snow. After all, Glacier National Park is home to 60 species of mammals, including the grizzly bear - it boasts one of the largest populations of them - the gray wolf, elk, lynx, wolverine, cougar, mountain goat and bighorn sheep. The advantage to snow prints is that you can be clued into an animals whereabouts - so you can view (or avoid) them accordingly.
4. Mountain Climbing