A racegoers walks into a rubbish bin following 2016 Melbourne Cup Day at Flemington Racecourse on November 1, 2016 in Melbourne, Australia. (Photo by Scott Barbour/Getty Images)

Brush your teeth and get cleaned up for the week ahead! These animals answered the call of good dental hygiene. Here: Hamster holds toothbrush. (Photo by Neo Vision/Getty Images/Amana Images RM)

Japanese macaques are relaxed in an outdoor hot spring bath at Hakodate Tropical Botanical Garden on December 1, 2016 in Hakodate, Hokkaido, Japan. The garden offers the hot spring treatment to macaques until May next year. (Photo by The Asahi Shimbun via Getty Images)

Martin Lacey Jr. with a lion during the premiere of the Circus Krone program “Circus der Preistraeger” at Circus Krone on February 2, 2016 in Munich, Germany. (Photo by Hannes Magerstaedt/Getty Images)

One of Jesus' disciples is dunked in a fountain during The Wintershall's “The Passion of Jesus” in front of crowds on Good Friday at Trafalgar Square on March 25, 2016 in London, England. (Photo by Chris Ratcliffe/Getty Images)

Attendees engage in cosplay and wearing costumes during WonderCon 2016 Day 2 at Los Angeles Convention Center on March 25, 2016 in Los Angeles, California. (Photo by Frazer Harrison/Getty Images)

Models walk the runway at the Yandy Swim Show during February 2017 New York Fashion Week at Pier 59 on February 14, 2017 in New York City. (Photo by Noam Galai/Getty Images)

View of an American marine as he lies in a foxhole and whistles at a husky, one of the scouting dogs used during the landing on Guam, August 1944. (Photo by W. Eugene Smith/Time & Life Pictures/Getty Images)