I lost my Pug, Riley, to cancer last year. We don't know how old he was. He was an adult dog when we adopted him from a shelter and we owned him for over seven years. The vet thought he was twelve or thirteen when he died.
He was a fun loving dog. He was very energetic. He was kind of stubborn. Would eat anything you put in front of him (and probably a whole lot that wasn't specifically put in front of him to eat). He was great with other dogs, and tormented the cats. He would ignore the cats for months and then one day just decide to chase them. One evening I was in the hallway, checking on my son who was taking a bath, and I saw Riley walk past a bedroom and notice a cat sitting in the open window. A switch was flipped in an instant and he changed course in mid-step and went charging so hard at the cat that when he hit the window both him and the cat knocked the screen out of the window and went tumbling out onto the lawn. Riley bounced once, landed on his feet and spent the next two blocks chasing the cat.
He snored horribly. And had bad gas. His farts were legendary. He loved people. New friends. Old friends. Everybody was greeted happily (although we all agreed that his lavish greetings were probably Riley's way of disguising his body search for food treats the person in question might be hiding).
He was a great companion. He was not the kind of dog that you could easily take places. In the summer he overheated too quickly, and he didn't like the cold of winter. Out of necessity, he was a home body, although he had enough energy to jog twenty miles a day. But boy, he made our home a fun, busy place to be.
Pugs shed heavily, almost as bad as a GSD (just in a different way). They run a very elevated risk of eye injury because of their flat face and protruding eyeballs (Riley popped an eyeball out once and it had to be surgically put back in the socket, with the eyelid sewed shut for almost two weeks). They very often need a surgical fix for the flap of skin inside their nose that causes so much snorting and snoring. You have to be consistently meticulous in cleaning the folds of skin on their faces, because they can get yucky bacterial infections if you don't.
They are something, that is for sure.