The reason for this behavior is not determined. Dogs that feed on other species' feces might do so because they might be nutritive, tasteful or cause little problems. This way, feces have a large percentage of non-digested food. At a later time, when the dog is hungry, he will eat his own feces. Anxiety due to environmental conflict.
Environmental stress can contribute to numerous odd forms of behavior, including coprophagy.
The dog might have been educated to eat feces in order to catch the owner's attention. Feces can be tasteful to the dog. Dogs can eat their own feces to avoid punishment from their owners. Anxiety of separation. Dogs left alone at home for extended periods of time without company end up showing this type of behavior.