My dogs both have a mild cough that is hanging on. I have spent about 500.00 in vet bills but we cannot find out exactly what is wrong. The dogs have their normal energy and appetite but have an occasional cough and engage in frequent headshaking as if they have an ear infection. They have been treated for French heartworm/lungworm and have been on antibiotics but still the coughing.
The vets here don't know whats wrong. Anyone have any ideas?