Hey everyone

Coco is almost 8 months but since I've got him, everytime I take him out for a walk he does this weird cough. It sounds like a deep dry cough with a mixture of sneezing in between. Now it's not constant but it happens at random times MOSTLY when I take him out for walks. Is it normal? Could be that I'm pulling too hard when I walk him, which I highly doubt....
Let me know, I'm worried
Thanks

-Maria