In this Sunday, April 6, 2014 photo, Valery Palma prepares to blow out the candle on a birthday cake for her one-year-old dachshund Camila, at Camila's birthday party in Mexico City. Palma, who has two dogs, spent $300 on the birthday party for 11 canines and 16 people, complete with cake, presents and snacks, at a dog hotel featuring a gym and massage and aromatherapy services. (Photo by Rebecca Blackwell/AP Photo)

A couple chats at a park during sunset in Chihuahua November 15, 2014. (Photo by Jose Luis Gonzalez/Reuters)

“Winter shapes, Moscow river”. Moscow river at this part is never covered by ice. When the temperature is very low it's possible to see a strong fog. Morning light and pipes of the oli factory creates a fantastic landscape. Photo location: Moscow, Russia. (Photo and caption by Sergey Rumyantsev/National Geographic Photo Contest)

The 8th annual Miss International Queen beauty pageant was held in Pattaya in Thailand. The twenty-one contestants from fifteen countries were all born male, so the Miss International Queen 2012 pageant is not an average beauty pageant.

Photo: Panvilas Mongkol, a contestant from Thailand, waits for the start of the final night of Miss International Queen 2012 transgender/transsexual beauty pageant in Pattaya November 2, 2012. Some 21 contestants from 15 countries, all of them born male, compete in the week-long event for the crown of Miss International Queen 2012. (Photo by Damir Sagolj/Reuters)

A chimpanzee relaxes in the shade at the Safari Park as the popular attraction prepares for the upcoming Jewish festival of Pesach (Passover) on April 14, 2008 in Ramat Gan near Tel Aviv, Israel. (Photo by David Silverman/Getty Images)

New York nightclub owner Jack L Hickman spends his free time marching around Times Square with a sign that reads “The only good communist is a dead communist”. (Photo by Peter Keegan/Keystone/Getty Images). 26th April 1965

Dried and shrivelled corpses, some fully clothed and some in coffins, line the wall of a vault of the Pantheon Cemetery on the summit of Cerro del Trozado in Mexico. They were removed from the crypts because of non-payment of cemetery fees. The hot dry air stopped the bodies from rotting. Most of them were placed here between the turn of the century and WW I. (Photo by Three Lions/Getty Images). Circa 1955