First of all, dogs shit like ink. We can find two characteristics from this sentence. The first is black in color, and the second is soft in shape. Dogs excrete black loose stool. First of all, when the color of dog feces is black, we first need to consider whether the dog has bleeding in the front digestive tract. Because of the bleeding in the front digestive tract, the blood must be black when it reaches the back digestive tract. Of course, this situation needs to be ruled out first, whether the dog ate some black food. Secondly, the feces are thin and soft. Generally, when there is serious inflammation in the intestines of dogs, liquid feces will be discharged.
Therefore, after knowing these clues, we can draw the conclusion that the dog has severe intestinal inflammation, and it is likely to be accompanied by bleeding in the front digestive tract. As for the cause, further examination is needed to determine.