Our Cooper was throwing up every morning ...at 4am. The yellow bile yucky stuff. The vet told us because these little guys are so active, if they go too long without eating the acid in their stomach gets riled up and UP it comes. He suggested giving a snack later at night, say around 8pm ( even if it meant holding back some of his dinner from 4) . It worked the first night we did it. No more throwing up. Have to remember yorkies are not like the 'big guys" who can eat once a day. Try that and if it doesnt help definitely go to the vet for tests |