I think you should at least call your vet and talk to him about this, and if the condition seems to get worse, then you should take the pup in. Hope this helps, and good luck to you and the dog.
My 11 Year Old Yorkshire Terrier Was Diagnosed With An Enlarged Heart. She Was Put On Enalapril And Cardio Strength For Her Heart. She Has A Cough Not All The Time But Occasionally. Her Appetite Is Great. I Am Very Concerned About This Condition. Any Ideas?
Cough is a common side effect of enalapril in humans. I assume that this may also be true in dogs. Ask your vet to change his meds. Here's a link to a reference.