I hate to be a spoil sport, but anyone who cared a lick for his dog wouldn't do that shit.
Dogs don't have any natural desire for drama. Why force them into a situation where they get no pleasure, and if even a little something goes wrong, they die?
They're bred to want to always be with people, and have psychological problems when left alone.
bullshit.
Pugs have been bred to be almost desperately dependent on people. You lie down on a bed or couch, and they will cry and howl and try to jump up with you. You leave them for several minutes and some of them suffer separation anxiety for even such a short time.
My second question is what is wrong with the human that they would want a breed with such aberrations? I would much prefer a happy balanced dog.
Pugs were bred to be lapdogs. They are happy, funny, and mostly stupid. They immediately bond to people as soon as they see us.
Wolves, from which all dogs are descended, are the perfect balanced dogs. Any tame dog is in some degree inbred, and all are unbalanced in some ways. If we want dogs as pets, that is the price people and dogs have to pay.