My dog and my moms dog both threw up eggyolk yellow colored liquid this morning. We have no idea what the cause is they havent ate anything different. They both seem fine except for when they got sick. My older dog hasnt gotten sick yet that is for both of them just did this in the last hour. Any ideas of maybe what it is my moms dog was just at the vet yesterday. For a ear fugus and nails trim vet said he was fine.