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)

American rapper Doja Cat poses with her award for Best New Pop Artist at the 2021 iHeartRadio Music Awards at Dolby Theatre in Los Angeles, California, U.S., May 27, 2021. (Photo by Mario Anzuoni/Reuters)

Aerial photo taken on June 19, 2021 shows the scenery of Mount Huashan in northwest China's Shaanxi Province. (Photo by Xinhua News Agency/Rex Features/Shutterstock)

Tony Hilliard, left, and his family expose themselves to the elements as Hurricane Ida begins to make landfall, Sunday, August 29, 2021, in New Orleans, La. (Photo by Eric Gay/AP Photo)

American actress and model Megan Fox attends The 2021 Met Gala Celebrating In America: A Lexicon Of Fashion at Metropolitan Museum of Art on September 13, 2021 in New York City. (Photo by Theo Wargo/Getty Images)

American singer Tinashe Jorgensen Kachingwe, known mononymously as Tinashe attends the 2021 MTV Video Music Awards at Barclays Center on September 12, 2021 in the Brooklyn borough of New York City. (Photo by Andrew Kelly/Reuters)

A diver in a pool at the Army 2021 International Military and Technical Forum, at the Patriot military park in Moscow Region, Russia on August 22, 2021. (Photo by Sergei Karpukhin/TASS/Alamy Live News)

Models showcase collection by designer Zhang Kejia during the 2021 Kunming Fashion Week on December 15, 2021 in Kunming, Yunnan Province of China. (Photo by Li Jiaxian/China News Service via Getty Images)