Pugs are so crazy adorable!  My Aunt and Uncle have two; Norman and Lewis.  They are super adorable as puppies!
I agree that they are pretty adorable, with those little wrinkly and muzzled faces.
Yes!  Their faces are so squishy.  They are my favorite of small dog breeds.  Norman, the older one, got so fat he couldn't breathe though.
I'm sorry to hear that. I really like the fine glossy coat of the pugs and also the range of colors that they can have.
He lost weight and was much better but Pugs do have a tendency to get chunky but my Uncle fed him too many treats and human food.  Yes, they own a fawn color and Lewis, the puppy, is black. I like the fawn color coat.
That's good to hear that he survived. I also like how well their muscles usually develop.
Yes, he's doing well but has to be on diet food.  Its human's fault for feeding them stuff they shouldn't. How do their muscles develop?
I'm not familiar with the science behind the muscle development of pugs. But from looking at them I can say that modern pugs often have a compact form, deep chest, and developed muscles when they come of age.
I see what you mean.  Yes, we always joke that they are one big muscle with how hard their bodies are.  I often wonder how their faces got the smashed look. 
Their faces are interesting from a genetic standpoint. A pug was also judged as best in show at the World Dog Show in 2004.