Eight-year-old Ugly, whose breed is not known, spends most of his time keeping warm by sitting on a computer at the Exeter Veterinary Hospital in New Hampshire, America.
Staff at the veterinary hospital have even been forced to put up fliers saying he's perfectly normal - just unattractive.
They claim he makes up for his terrible looks by having inner beauty and a nice disposition.
He's also turned into something of a tourist attraction in Exeter, New Hampshire, America.