The main reason for the color of our stool (or feces) is the presence of bilirubin, a breakdown product of the hemoglobin. The amount of it causes different variations from yellow to dark brown. When the passage time of the food in the intestine and the amount of bilirubin is constant, the color changes very little. Illnesses like diarrhea, which cause a ...
With the help of Bristol Stool Chart (BSC) and full explanation of conditions related to different stool sizes from this link you could have a full understanding over stool size.
» Type 1: Separate hard lumps, like nuts Typical for acute
disbacteriosis. These stools lack a normal amorphous quality, because
bacteria are missing and there is nothing to ...
In a healthy person, stool weight depends mainly on the quality and quantity of the diet. The mean stool weight of a normal defecation is about 320 g .
Dry weight of fecal matter contains :
30 % bacteria
30 % undigested food and fiber
10-20 % fat
Let's do the math (the only nutrients in feces are fats and proteins):
20% * 320g = 64g of ...
UPDATE: I was not paying close enough attention to size. If the feces is as small as the OP mentions in the comment below this post ("20+ of these scat in an acorn"), then this is very unlikely porcupine!! Instead, the size and shape suggests the feces belong to either a rat (perhaps wood rat) or some type of squirrel.
I await an update form the ...