1, too little feeding. Dogs can't eat enough, and then they want to eat shit, because there are undigested fibers in the shit. If the stool is dry, feed it too little, especially the puppy, eat less and eat more meals. It is normal to have moderate stool hardness.

2, the lack of trace elements in the body, the lack of trace elements will also have the performance of eating soil on the wall. Buying a bottle of trace elements and feeding it according to the instructions every day will relieve it for a while.

3. Pick up people for dinner. Because it can't be absorbed cleanly in human feces, dogs think there are edible parts in it, so they pick up feces to eat. Dogs should learn to refuse to eat outside, and their owners should teach them well at ordinary times. No matter what's outside, don't dare to eat.

4. I am afraid of being destroyed by evidence. Dogs shit at home, and if they are found, they will be beaten, so it is his thinking to eat them before they are found. The host should be educated moderately at ordinary times, and let him know that eating shit is wrong and work hard in the right way.