The dog's inability to poop may be caused by constipation, getting angry, eating less, etc. It is necessary to observe the physical condition of the dog. If it does not defecate for a long time, it is best to go to the pet hospital for examination and timely treatment. Usually, the dog should drink more water, exercise more, and mainly eat light food or liquid food, which is easier to digest. Feed probiotics regularly to promote digestion.