The contest is held in Petaluma, California, every year as a part of the Sonoma-Marin Fair and has attracted an enormous quantity of media consideration.
First established within the Nineteen Seventies, organisers say it’s held to “celebrate the imperfections that make all dogs special and unique”.
It now attracts audiences of as much as 30,000 individuals, with the winner receiving $1,600, a trophy and a free journey to New York City.
In the 2022 version Mr Happy, a 17-year-old Chinese Crested-Chihuahua combine from Arizona, took home the prize.
And there have been loads so-ugly-they-are-adorable entries over the years.
Here are 19 of the dogs with faces solely a mom may love.