Leave the area immediately. Moose pellets are larger than those of deer. Mink, weasels, marten, and fishers leave their calling cards on prominent objects, such as rocks and logs, in the middle of the trail. Their spoor are compacted, twisted bits of fecal material and hair, but if you find seeds in them, you're on the trail of the omnivorous marten. Mouse droppings are the size of rice, very rough, wrinkled, and irregularly shaped.
Squirrels produce smooth, oval pellets that are slightly larger.
Wild cat scat is more segmented, as opposed to the loglike canid feces. Piles of scat at a tree's trunk were left by a raccoon or a raptor. Look up for a nest or roost. Similarly, don't forget that scat isn't just at your feet. Rock outcrops are often outhouses.