Chimpanzees aren't legally humans, a judge said. Brandon Wade/AP Images for The Humane Society of the United States and Chimp hide caption

itoggle caption Brandon Wade/AP Images for The Humane Society of the United States and Chimp

In this image taken from a November 2012 video, Cecil the lion is shown in Hwange National Park in Zimbabwe. Paula French via AP hide caption

itoggle caption Paula French via AP

Victoria, a 2-year-old rat, sniffs for TNT, sticking her nose high in the air to indicate she's found some. She works her way down a 10-meter line with a handler on either end, and is able to detect the presence of TNT at a distance of approximately half a yard. Michael Sullivan for NPR hide caption

itoggle caption Michael Sullivan for NPR

Mineral supplements, ape-style: A female chimp called Kana eats clay in the Budongo Forest of Uganda. A.Schel/Budongo Conservation Field Station/Animal Ecology, Utrecht University, The Netherlands hide caption

itoggle caption A.Schel/Budongo Conservation Field Station/Animal Ecology, Utrecht University, The Netherlands

The Ensatina salamander, a lungless species common along the U.S. West Coast, is one of hundreds of species of salamanders endemic to North America threatened by an emerging infectious pathogen. Courtesy of Tiffany Yap hide caption

itoggle caption Courtesy of Tiffany Yap
Hanna Barczyk for NPR

Lake herring roe at the Dockside Fish Market in Grand Marais, Minn. Some workers at the market call it "Lake Superior Gold." Derek Montgomery for NPR hide caption

itoggle caption Derek Montgomery for NPR