My dog has been coughing a lot. The vet said it was caused by the bacteria going down her throat from her rotting teeth. He cleaned her teeth and was put on an antibiotic for two weeks. She is still hacking and coughing all the time. She is 15 years old and a poodle mix.
I agree with the vet. Many times infected gums can lead to a cough. Since there is no improvement, I recommend a chest x-ray. good luck, vetcare