Has anyone had the basenji throw up a white foamy liquid? Moko has done this on 2 different occasions days apart this week. Both times were in the afternoon, he had eaten breakfast 3/4 cup dry Fromms mixed w/a couple to tbs. of Fromms wet. It’s not the yellow stomach bile from not eating. He seems fine afterwards, playful and willing to run when I take him outside. He’s 17 months old and hasn’t done this until this week. Any thoughts or advice would be appreciated, thx.