A police dog licks its face after receiving food during the dog festival, as part of celebrations of Tihar at Nepal Police Academy in Kathmandu October 22, 2014. Hindus all over Nepal are celebrating the Tihar festival, also called Diwali, during which they worship cows, which are considered a maternal figure, and other animals. Also known as the festival of lights, devotees also worship the goddess of wealth Laxmi by illuminating and decorating their homes using garlands, oil lamps, candles and colourful light bulbs. (Photo by Navesh Chitrakar/Reuters)

Dancers of the English National Ballet perform “Strictly Gershwin” at the Coliseum on January 10, 2012 in London, England. (Photo by Ian Gavan/Getty Images)

The moon shines through trees at a United Nations displacement camp at dusk on March 14, 2011 in Ras Jdir, Tunisia. (Photo by Dan Kitwood/Getty Images)

The performers prepare for the show. Fontana, a travelling water circus produced by Cirque Du Liban at Festival City in Dubai. (Photo by Chris Whiteoak/The National)

Three-month old cheetah cubs make their public debut at the Smithsonian National Zoo on July 24, 2012 in Washington, DC. (Photo by T.J. Kirkpatrick)

This young boy wrestled with his emotions at the National Children’s Sumo ­Tournament in Tokyo on July 30, 2012. (Photo by AP Photo/LaPresse)

Celebrities attend The National Reality TV Awards 2016 at the Porchester Hall in London, United Kingdom on September 29, 2016. (Photo by FameFlynet UK)

A saddle-billed stork stands in the grassland at the Nairobi National Park near Nairobi, Kenya January 23, 2017. (Photo by Thomas Mukoya/Reuters)