The world's "ugliest" dog has died at the age of 14.   The dog is the three time champion of ugliness at the Sonoma-Marin fair in California and has used his fame to forge a brief TV career.   The dog's owner and boyfriend were repulsed by him.   The boyfriend actually left over the dog's looks.   But later the woman included the dog's in a picture she placed on an online dating service through which she met her current boyfriend.