Another few things that you can try is when you vacuum and you don't empty the bag the fleas that are in there can get out and back into your carpets so you take a flea collar and cut it  up into small pieces or you can leave it whole and place it into your … Read more

I have never owned a Pug but from the animals that I have owned the major reason that they have randomly had hair loss is from stress.  But I would contact a vet to ask them personally just to make sure