Bleeding and vomiting in dogs may be caused by a variety of reasons, including but not limited to digestive system problems, parasitic infections, food intolerances, drug side effects, and even symptoms of certain diseases. These symptoms may indicate a serious problem with your dog's health, so the best course of action is to contact your veterinarian as soon as possible for diagnosis and treatment.

At home, you can take the following emergency measures to provide initial relief to your dog:

1. Ensure water supply: Your dog may become dehydrated after vomiting, so make sure it has plenty of drinking water. 2. Temporary dietary management: With the advice of your veterinarian, you may need to temporarily change your dog’s eating habits, such as providing easy-to-digest food, or fasting for a period of time to reduce the burden on the gastrointestinal tract. 3. Watch for symptoms: Closely monitoring changes in your dog’s behavior and symptoms can provide your veterinarian with important information to help them make an accurate diagnosis. 4. Avoid self-medication: It is not recommended to self-medicate your dog unless clear instructions are provided by your veterinarian, as the wrong medication or dose may cause your dog’s health to deteriorate further.