A photographer tested the concentration of several pairs of dogs as he captured their reactions to treat time in a series of shots. Christian Vieler, 47, of Waltrop, Germany, has been a professional dog photographer since 2016. He came up with the idea of snapping two dogs catching treats simultaneously. Here: Basset Hounds. (Photo by Vieler Photography/Caters News Agency)

Artists wearing Japanese traditional clown masks march during the First Konpira Festival at Kotohiragu shrine in Tokyo Wednesday, January 10, 2018. The shrine is dedicated to sailors and seafaring. (Photo by Eugene Hoshiko/AP Photo)

A glitter rainbow mini dress, worn by Taylor Swift in her “End Game” music video, and other outfits in the William Morris Gallery in London, United Kingdom on March 31, 2023 unveils an exhibition of fashion designer Ashish. (Photo by Guy Bell/Alamy Live News)

Metropolitan Police patrol as people party at the Soho district, as the coronavirus disease (COVID-19) restrictions ease, in London, United Kingdom on April 16, 2021. Pubs and Restaurants are expecting good business tonight being the first Friday night after Coronavirus lockdown rules were relaxed to allow outside dining and drinking. (Photo by Henry Nicholls/Reuters)

Two Afghan children stand amid piles of garbage next to their home, in Kabul, Afghanistan, Monday, April 18, 2022. (Photo by Ebrahim Noroozi/AP Photo)

A soldier from the South Korean army special forces breaks stone plates with her head during a martial arts demonstration for Memorial Day at Korea War Memorial Museum in Seoul, South Korea, Monday, June 6, 2016.(Photo by Ahn Young-joon/AP Photo)

Chaps, flaneurs, dandies and dandizettes in their stylish outfits once again meet beside the statue of Beau Brummell on Jermyn Street for a relaxed stroll around St James', Piccadilly Arcade to Piccadilly Circus and Soho in London on May 11, 2025. The annual fun walk is organised by “The Chap” magazine. (Photo by Alamy Live News)

British theoretical physicist Stephen Hawking, Cambridge University Professor and Fellow, circa 1985. Stephen Hawking, the brightest star in the firmament of science, whose insights shaped modern cosmology and inspired global audiences in the millions, has died aged 76. (Photo by Gemma Levine/Getty Images)