While an occasional morning bile vomit can happen in dogs (especially after fasting for a medical procedure), it shouldn’t be a daily occurrence. Frequent vomiting like this is a sign that something isn’t right and should be checked by a veterinarian. Unfortunately, many different issues can cause bile vomiting, including gastrointestinal problems, allergies, pancreatitis (inflammation of the pancreas), or even toxin exposure. A proper diagnosis by a veterinarian will help ensure your dog gets the care they need to feel better soon.