Hello all, I have a six yr-old male chihuahua. The past few weeks he has had diarrhea and vomiting on and off. Yesterday and today it has become more frequent. He has been more lethargic than usual, he was vomiting white foam and green squishy stuff, currently vomiting clear with white foam. He has had green diarrhea as well. He is also drinking water. I would not be asking for help if I thought it was just grass. Please help.