vomit, diarrhea

Mangmi and Sisouk is brown colour miniature poodles. They is happy all the time. because they play at garden. Sometimes two dogs has diarrhea and vomit. But their condition is normal. At the mouth has white colour dust . Maybe vomit water dried. Owner don't know what they ate. At clinic we took them in the cage. They used to stay in the cage calmly. I will give the medicine for them . And observation together.