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)

Aide Choque, wearing a mask amid the COVID-19 pandemic, jumps with her skateboard during a youth talent show in La Paz, Bolivia, Wednesday, September 30, 2020. Young women called “Skates Imillas”, using the Aymara word for girl Imilla, use traditional Indigenous clothing as a statement of pride of their Indigenous culture while playing riding their skateboards. (Photo by Juan Karita/AP Photo)

A person dressed as a zombie walks during the annual Zombie Walk in Mexico City, Mexico on October 21, 2023. (Photo by Quetzalli Nicte-Ha/Reuters)

A man paddleboards during a sunrise on the beach in Miami Beach, Florida, on March 23, 2021. (Photo by Chandan Khanna/AFP Photo)

A Turkey-backed Syrian fighter fires a rocket-propelled grenade as he takes part in a military exercise in the countryside of the northwestern city of Afrin, in rebel-held part of Aleppo province, on May 31, 2022. (Photo by Rami al Sayed/AFP Photo)

Members of the public enjoy the sunny weather along the Brighton beach in East Sussex, United Kingdom on July 17, 2022. (Photo by Marcin Nowak/London News Pictures)

A woman crosses the street on a foggy morning in Frankfurt, Germany, Friday, October 29, 2021. (Photo by Michael Probst/AP Photo)

Focus on two glasses of champagne on floor. Ardent loving couple is sitting on bed and hugging with passion on background. Romantic date concept. (Photo by Olena Yakobchuk/Rex Features/Shutterstock)