I've always wondered about these types of dogs. My sister in law's sister has a perfectly cute and tiny Pug. He's the cutest thing and he can go anywhere. Why not just go with what is already a small dog without pushing the envelope for making it smaller? Why would you want a dog that you have to treat as if it were made of glass?

What type of lifespan do they have? Can they live full, long healthy lives? Or are they subject to a myriad of bred-in problems?