In picture: Ugliest dogs compete for 2018 world title

Zsa Zsa has an underbite and a tongue that almost touches the floor - but these are qualities that won over judges at The World's Ugliest Dog Competition in Petaluma, California on 23 June. The nine-year-old English bulldog walked away with the 2018 title.

The competition saw 14 canines compete for prize money of $1,500 (£1,130), including Himisaboo, a Chinese crested wiener dog mix, seen here with his owner Heather Wilson.

While the competition highlights unattractive pooches, organisers say it is actually a celebration of the dogs, many of whom were rescued from shelters or puppy farms. Here is Wild Thang, a Pekingese, who was a strong contender.

Tee Tee, a Chinese crested, was also among the competitors. The annual event is intended to promote pet adoption.

Mandarina flashes a toothy smile to the camera as she walks across the stage. The event is held at the Sonoma-Marin Fair.

Rascal Deux, a Chinese crested, channelled his inner John Lennon, but it was not enough to win the contest.

Last year's World's Ugliest Dog Competition winner Martha, a Neapolitan mastiff, took to the stage before his successor was crowned.

Winner Zsa Zsa was joined on stage by runner up Scamp, a mix breed who won the contest in 2016