It all depends where the bleeding occurs. If the bleeding is in the stomach or small intestine, the blood will likely be clotted by the time it reaches the anus, and that will make the feces dark in color and tarry in consistency.
If the bleeding is in the rectum or anus, then you will see fresh blood on what is otherwise normal feces.
It will not go away
Its black specs
Dark brown
The same as humans
Yes it can. The feces is harder and you can get hemorrhoids which will break and bleed when the feces press on it or it will just bleed a little anyway.
Medication can alter the colour of stools
Feces has bacteria that could cause an infection in the cut.
by whats its eaten, the size, shape and colour.
There must be some bleeding somewhere in the colon for you to see this. It could be a hemorrhoid.
Photo colour adjustment
Technically it can have changes in colour based on the intake of food and or chemicals such as medicines
Some of the different factors the affect energy losses in animals through feces urine and heat are the animals bowel's.