The reasons why dogs always have a dry cough:

1. It may be because there is a foreign object stuck in the dog's throat, which makes the dog uncomfortable and always has a dry cough.

2. It may also be caused by infection with parasites such as heart and lung filariasis, which may cause a dry cough.

3. It may also be a symptom of dry cough caused by respiratory diseases such as bronchitis and pneumonia.

4. It may also be a dry cough caused by canine distemper and other diseases due to dog virus infection.

5. It is also possible that the dog gets angry due to dietary problems, which causes the dog to always cough.

Solutions to dogs who always have dry coughs:

1. If it is caused by foreign matter, the foreign matter in the dog’s throat should be removed in time and the inflammation should be eliminated to prevent infection.

2. If it is caused by parasitic infection, the dog should be given internal anthelmintic drugs to deworm the dog.

3. If it is caused by respiratory diseases such as bronchitis, the dog can be treated with drugs containing doxycycline.

4. If it is caused by a viral infection, the dog should be isolated in time and seek medical examination and treatment in time.

5. If it is caused by dietary problems, the dog’s diet should be adjusted and more light meals should be fed.