Why is my dog coughing after antibiotics, especially when barking?
This does not sound like a typical Kennel cough, which is usually responsive to antibiotics within 3-4 days, and then goes away after stopping medication in about 10 days time. There is something else going on here, which could include any of the following: an underlying heart condition (the heart and lungs are very much involved with each other), laryngeal paralysis (causes coughing in young adult dogs but not as common as other disorders), lung parasite, fungal infection of the lungs.
You will have to get some testing done at this point to determine what the underlying cause is so that we know how best to treat Bruno moving forward. I would recommend starting with chest x-rays through your vet.
I hope that Bruno feels better soon! Best wishes and take care.
Updated on September 23, 2025