In winter the scat becomes quiet hard and compact consisting mainly of the more woody buds, twigs, and bark.Avoid using your fingers to work with scat (wear gloves).
Herbivores tend to show loose, mushy scat in the summer because they are browsing on soft succulent vegetation.
As summer turns to fall you will find more evidence of nuts, seeds, and fruits.
Looking at the track you will also note the type of preferred gait used by the animal (in order to differentiate between front and rear tracks).
There are a number of different types of locomotion patterns.
Leave a popsicle stick marker and check it every so often. Find some fresh, pick it apart and examine the contents.