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)

(L-R) Maria Silva, Milena Cortes, Maria Arteaga, Jackeline Bastidas and Gissy Abello pose for a picture at the Famproa dogs shelter where they work, in Los Teques, Venezuela, August 25, 2016. Venezuelans struggling to feed their families let alone their pets are dumping animals on the streets, in parks and at makeshift homes overrun with scrawny animals amid an economic crisis. An hour from Caracas in Los Teques, hundreds of dogs bark and run around the streets scavenging for food outside a makeshift shelter. (Photo by Carlos Garcia Rawlins/Reuters)

These animal portraits and painted headdresses by Amy Hamilton are adorably perfect for this time of year. They feel so soft and wintery, and would make amazing notecards for gifts.

Painter Alexander Zavala residing in Gelendzhik, painted in the style of a historical series of paintings about animalism epic cats.

25-year-old Masayoshi Matsumoto is a Japanese artist that creates incredible animals out of balloons. From birds to insects, the artist’s designs can involve dozens of variously sized balloons in an assortment of shapes. For more be sure to check out his creative artworks at the links below.

Photograph Jill Greensberg is known for her ability to bring human qualities into animal photography. Her “Bear Portraits” project carries all the spectrum of emotions and personalities along with the depths of characters captured in different members of the Ursidae family

Dillon was born in the spring of 2013. He lived for four months on the streets near Boston, MA before being scooped up by the Animal Rescue League of Boston.