Causes of dogs coughing up blood:

1. It may be caused by respiratory tract infection in dogs and needs to be treated at a pet hospital.

2. Caused by cardiovascular disease. For example, dogs with left heart failure, pulmonary edema, etc. may also have symptoms of coughing up blood.

3. Blood diseases. Such as purpura, aplastic anemia, hemophilia, etc.

4. There is bleeding in the mouth or esophagus, such as accidentally eating sharp objects.

What to do if your dog coughs up blood:

1. If it is a severe gastric ulcer, digestive tract scratch, etc., you generally need to try using it on your dog first. Coagulation drugs are used to stop bleeding, and antiemetic drugs are used to stop vomiting.

2. For dogs suffering from severe cough and hemoptysis, drugs should be given to relieve cough, but drugs that inhibit breathing such as morphine are prohibited.

3. Give your dog more water, let it rest more, keep warm, and go to the pet hospital for treatment in time.