You can but make sure the female is the pug other wise the mother will not be big enough to carry or to have the puppies. You also need to talk to your vet about it so they can make sure mom is good and healthy before crossbreeding.
My Coco is am 11yr old pugxpeke cross and the smartest, lovable, loyal and gift on 4 legs. A real delight to have in my life! I highly recommend this cross