the profile says the small is a good size for a Pug.  Well my pug is too big for it, so I would recommend going a size higher than they make it seem. It is relatively inexpensive and seems to be well made.  Plus, she will lay on top of the hood sometimes... For these reasons, I will give it a soft 3... But y'all were pushing it!!!  Furiendly tip: Dogs do not adhere to the Asian sizing guide.. They're dogs!