A biker passes by a pair of mailboxes in the Capitol Hill neighborhood November 6, 2012 in Denver, Colorado. Colorado is considered by most experts to be one of the key battleground state in this year's presidential election. (Photo by Marc Piscotty/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)

The Sculpture Bank (2017) by Chinese artist Mu Boyan is exhibited along the Bondi to Tamarama Coastal walk as part of the Sculpture by the Sea exhibition in Sydney, Australia, October 18, 2018. (Photo by Charlotte Curd/The Guardian)

These hilarious photos show some of nature’s mightiest animals — yawning away! (Actually – not always; AvaxNews). The images were taken by photographers across the world, from the African savannas to the Pacific Ocean. Here: Elephant Seal. (Photo by David Crocker/Caters News Agency)

A zoo employee feeds a 3-week-old Eurasian eagle owl at the Royev Ruchey zoo on the suburbs of the Siberian city of Krasnoyarsk, Russia June 7, 2016. (Photo by Ilya Naymushin/Reuters)

This strange coral-looking specimen is actually a mushroom. The photo, “Beautiful Destroyer”, was taken in the Panamanian tropical rainforest where the mushroom produces nitrogen, an element vital to soil health. (Photo by Sarah A. Batterman)

A fox cub gets up to mischief in a garden in Halifax, West Yorkshire on May 10, 2022. The homeowners say a family of foxes visit regularly from their nearby den. (Photo by Steve Midgley/Solent News)

A green jumping spider (Lyssomanes viridis), in a forested area of Cerro de la Muerte, in San Jose, Costa Rica, 20 May 2025. International Day for Biological Diversity is celebrated every 22 May around the world. (Photo by Jeffrey Arguedas/EPA/EFE)