Endangered species are animal popluations that are at risk of extinction. Natural extinctions do occur, but human beings play an integral role in animal extinction and preservation.
There is only one tiger species, but new research reports the existence of six subspecies — information that could help us save these dwindling predators.
Frogs are like the canary in the coal mine for the state of the environment. And the bad news is they are not doing well.
Milkweed is the only thing a monarch butterfly eats. Their numbers are dwindling, but this common backyard weed could save them.
Scientists discovered some new chameleon species with some very colorful characteristics.
The Evolutionarily Distinct and Globally Endangered (EDGE) Reptiles List includes 100 reptiles, including the punk rock Mary River turtle, that have lineages dating back to the Age of Dinosaurs.
Only two female northern white rhinos remain after the passing of Sudan, the last male of its subspecies.
DNA technology is helping to curtail the brutal trade in poached rhino horns.
Panda populations are flourishing, and that's good news. But with the threats of infrastructure and livestock, can that trend last?
After 42 years of protection, the Yellowstone grizzlies will lose their status. Critics worry the bears could become targets for trophy hunter.
People flock to zoos to see pandas, lions and monkeys — the ones often referred to as "charismatic megafauna." They also attract a lot of donations. But is there a downside to making some creatures the stars of the animal show?
Farming, prey decline, illegal trading and legal hunting all threaten the charismatic but secretive big cats.
Social media couldn't save Cecil the Lion. But the outrage at his death may be helping save other endangered animals and species.
The coelacanth is a real-life case of the living dead (well, kind of). The massive prehistoric fish was close to being left for extinct — until one was found in 1938. What makes this ancient creature so significant?
Learn more about these endangered fish.
Meet giant pandas, Mei Xaing and Tian Tian. Learn how the crew at the National Zoo enrich Mei Xaing and Tian Tian's diets.
Brenda Morgan has a soft spot for giant pandas. Learn more about Morgan and her love for these amazing animals.
Learn about the zookeeper who cares for Mei Xaing and Tian Tian. Mei Xaing and Tian Tian are the giant pandas babies at the National Zoo.
Ever woner who is crazy enough to try to train pandas at the zoo? Read on to learn all about giant pandas and how they are trained in zoos.
Learn about what it takes to care for two little, giant pandas. Learn how the crew at the National Zoo help take care of Mei Xiang and Tian Tian.
In honor of giant pandas everywhere, we're taking you back! Remember Ling Ling and Hsing Hsing, two giant pandas that were gifts from the Chinese Government.
Meet Mei Xiang and Tian Tian -- two little, giant pandas. Learn what it takes to care for two baby giant pandas.
Meet Mei Xiang and Tian Tian! Learn what it takes to care for two baby giant pandas.
Who doesn't love a good giant panda story? Check out this timeline discussing Tai Shan's first year of life and learn more about this baby panda from the National Zoo.
Listen to a panda expert from the National Zoo talk about the birth of Tai Shan. Learn about giant pandas.
The blue-sided tree frog is found in the moist tropical and subtropical regions of Costa Rica. The blue-sided tree frog has golden eyes, a green-blue back, blue sides and a pinkish underbelly.