The pooch died Friday, just short of his 15th birthday, his owner said.
"I don't think there'll ever be another Sam," Susie Lockheed said, adding: "Some people would think that's a good thing."
Sam won the ugliest dog contest at the Sonoma-Marin Fair this summer for the third year in a row. The pedigreed Chinese crested had made appearances on TV in Japan, radio in New Zealand and in Britain's Daily Mirror tabloid. He also had met Donald Trump on a talk show set.
Lockheed said she initially was terrified of Sam when she agreed to take him in as a rescue dog six years ago on a 48-hour trial basis. Although she fell in love with him, his appearance repulsed her then-boyfriend and prompted the man to break up with her.
Later, however, Sam became a matchmaker by bringing together Lockheed and her current beau, who saw a picture of the two on an online dating site.
Lockheed said she had Sam euthanized after she learned Sam's heart was failing. She said she's felt a little lost ever since, and is sleeping with Sam's favorite toy — a stuffed bear he picked up and carried home.
