Festival-goers enjoy the mud during the annual Boryeong Mud Festival at Daecheon Beach on July 18, 2015 in Boryeong, South Korea. The mud, which is believed to have benefical effects on the skin due to its mineral content, is sourced from mud flats near Boryeong and transported to the beach by truck. (Photo by Chung Sung-Jun/Getty Images)

Bibi rides her bike on the Playa during the Burning Man 2015 “Carnival of Mirrors” arts and music festival in the Black Rock Desert of Nevada, August 31, 2015. Approximately 70,000 people from all over the world are gathering at the sold-out festival to spend a week in the remote desert to experience art, music and the unique community that develops. (Photo by Jim Urquhart/Reuters)

Barking mad owners have proved they really do look like their pets – by performing impressions of their own dogs. In a series of hilarious “paw”-traits, owners pull their best faces to look like their pooches. Snapped by photographer Ines Opifanti, people stuck their tongues out, yawned and tilted their heads in curiosity at the camera. Opifanti, from Hamburg, Germany, came up with the idea while interacting with her own dogs, two pug/French bulldog crossbreeds. Here: Amina and Zazou the dog. (Photo by Ines Opifanti/Caters News)

Roma people are seen in a Romani camp installed along La Petite Ceinture, an abandoned railroad line, in Paris, France, February 2, 2016. More than 350 Roma people, who have been living here since the last summer, face eviction from the makeshift camp this week. (Photo by Jacky Naegelen/Reuters)

A worker puts the final touch to a replica of a giant eagle and pharaons made with lemons and oranges which shows a scene of the movie “Cleopatra” during the Lemon festival in Menton, southern France, February 10, 2016. Some 140 metric tons of lemons and oranges are used to make displays during the 83rd festival, which is themed “Cinecitta”, and runs from February 13 through March 2. (Photo by Eric Gaillard/Reuters)

Zulmira Jesus poses for a portrait at a street in Povoa de Agracoes, near Chaves, Portugal April 19, 2016. In the villages of Agracoes and Povoa de Agracoe, the steady drip-drip of emigration has brought down population numbers from more than 50 residents to fewer than a dozen each. These remaining villagers share the same glum acceptance that, after they have gone, their villages will die out too. It is the same desolate picture in scores of other backwater settlements in Portugal's interior, north to south. (Photo by Rafael Marchante/Reuters)

Those lights are actually bioluminescent shrimp, better known as sea fireflies, or, in Japan, as “umibotaru”. Visible every year from May until the end of October, they live in the sand around very shallow sea water and are often seen floating between the extremes of high and low tides. Here: Bioluminescent sea fireflies glittering like diamonds on the rocks and sand. Okayama, Japan. July 2016. (Photo by Trevor Williams/Jonathan Galione/Getty Images)

An anti-government demonstrator argues with a Bolivarian National Police officer during a march toward the headquarters of the national electoral body, CNE, in Caracas, Venezuela, Wednesday, May 18, 2016. Opposition protesters were blocked from reaching the CNE as they demand the government allow it to pursue a recall referendum against Venezuela's President Nicolas Maduro. (Photo by Fernando Llano/AP Photo)