These Pugs had shorter legs and the modern-style Pug nose. In dogs, butterfly vertebrae occur most often in Bulldogs, Pugs, and Boston Terriers. Pugs are known for being sociable and gentle companion dogs. In Tibet, Buddhist monks kept Pugs as pets in their monasteries. Pugs, like other short-snouted breeds, have elongated palates. Boxers and pugs are prone to multiple mast cell tumors. Frank has helped to popularize pugs and has become an iconic example of the breed. Her many Pugs, which she bred herself, included Olga, Pedro, Minka, Fatima and Venus. Pugs are playful and thrive on human companionship. Some pugs are also born with stenotic nares which can also inhibit their breathing. In 2019, the Dutch government forbade breeding of pugs. The English painter William Hogarth was the devoted owner of a series of Pugs. In 2005, Audrey Tang created the Pugs project, an implementation of Perl 6 in Haskell. Hogarth owned several different pugs through his life. He and his girlfriend own two pugs.