Since you made me Google it (-/
Alligator Tracks and Sign - Part I - Winterberry Wildlife.
Scat
Alligators do not urinate: Both feces and nitrogenous waste are excreted through a single opening – the cloaca. The scat has a unique consistency which makes it hard to confuse with that of any other animal. Because alligators have powerful digestive juices, you generally do not find hair, bones, or other recognizable remains in the scat. Rather, it is uniform and clay-like. It is brown when fresh and fades to beige, buff, or olive as it dries. When completely dry it is white and crumbly. The size of the scat depends on the size of the animal. An enormous specimen can produce droppings of several inches in diameter. Hatchlings produce tiny scats.
Alligators do not drop scats strategically for marking purposes the way some mammals do; an animal simply deposits one wherever it happens to be when it has to eliminate. Therefore, scat accumulations reflect time spent by the animal in that spot.