Be sure to pay attention to the dosage when feeding montmorillonite to cats. Although montmorillonite can help cats relieve diarrhea, if the cat takes too much, it may cause difficulty in defecation, and even cause death of the cat in severe cases, so it is best not to do it yourself. Feed montmorillonite to cats. If your cat has diarrhea or constipation, you can feed it some probiotics to help regulate the intestines. If the condition is more serious, it is best to go to a pet hospital for examination and treatment.