A Samoyed is groomed before being judged on the final day of the Crufts dog show at the National Exhibition Centre in Birmingham, central England, on March 9, 2025. (Photo by Oli Scarff/AFP Photo)

Global wildlife populations will decline by 67% by 2020 unless urgent action is taken to reduce human impact on species and ecosystems, warns the biennial Living Planet Index report from WWF (World Wide Fund for Nature) and ZSL (Zoological Society of London). From elephants to eels, here are some of the wildlife populations most affected by human activity. Here: The maned wolf is among the large mammals in the Brazilian Cerrado that are threatened by the increasing conversion of grasslands into farmland for grazing and growing crops. (Photo by Ben Cranke/Nature Picture Library/Alamy Stock Photo)

Bex Hetherington exhibits a T-shirt at the Edinburgh College of Art degree show on June 8, 2011 in Edinburgh, Scotland. Students work will be exhibited across the campus buildings turning Edinburgh College of Art into the city's biggest gallery space. The work ranges from conceptual to commercial with inspirational influences as diverse and wide ranging as fashion photography, volcanoes, the crazy lady who put a cat in a bin, fairytales, the star system and serial killers. (Photo by Jeff J Mitchell/Getty Images)

Greyhounds resume racing behind closed doors on June 01, 2020 in Perry Barr, England. Greyhound racing across England is returning as restrictions on sporting events are relaxed during the coronavirus pandemic. (Photo by Clive Mason/Getty Images)

A lion cub wakes in the morning sun at the Zimanga private game reserve in South Africa on April 9, 2022. (Photo by Calvin Kotze/Animal News Agency)

Komodo Judo by Andrey Gudkov. Finalist, Amphibians & Reptiles. Two large male Komodo dragons hissing angrily at each other in Indonesia’s Komodo national park. Komodo dragons can grow up to 8ft. (Photo by Andrey Gudkov/Wildlife Photographer of the Year 2015)

A hummingbird drinks from a flower in a garden on the outfield lawn before a spring training baseball game between the Kansas City Royals and the Athletics, Monday, February 24, 2025, in Surprise, Ariz. (Photo by Lindsey Wasson/AP Photo)

The Jinshanling Great Wall is seen after a rainfall on March 31, 2022 in Chengde, Hebei Province of China. (Photo by Zhou Wanping/VCG via Getty Images)