Who walked through the snow here? Would you have guessed it was a pigeon and a cat? Then be sure to test your knowledge in our quiz. Photo: Getty Images Between trees, on paths, and at forest edges, ...

Between trees, on paths, and at forest edges, animal tracks tell of a lively, mostly unseen nightlife. Mud and fresh snow act like nature’s notepad–each animal leaves its own unique signature. For our ...

Between trees, on paths, and at forest edges, animal tracks tell of a lively, mostly unseen nightlife. Mud and fresh snow act ...