The weasel family, porcupines, beavers, muskrats, raccoons, and opossums all have five toes. Gloves or No Gloves. Cats, bobcats, and lynx usually have their claws sheathed. Other animals lack this ability and their claws will show. Many animals will leave body markings as well as tracks.
Porcupines drag their whole body.
This helps in groups like the weasel family where it is sometimes hard to tell one from another. You can also measure the straddle and stride. Beware of fallen clumps of snow from trees, off of buildings, or electric lines. Also drips of water can look much like small animal tracks.