Ugliest Dog Day is celebrated on June 19 and highlights the charm of unconventional pets, particularly dogs that may be considered unattractive. This day originated from a contest held annually in Petaluma, California, where dogs with unique looks compete for the title of the ugliest dog. The event, which began as a pet parade activity, has gained popularity and is now part of the Sonoma-Marin Fair. Celebrations often include attending the World’s Ugliest Dog Contest, spoiling one's own "ugly" dog with treats or toys, and learning about breeds typically featured in the contest, such as the Chinese Crested and Neapolitan Mastiff. The day also aims to promote the adoption of less conventionally attractive dogs, as they often wait longer in shelters for homes.