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For the National Zoo's esteemed senior citizens, only the very best in geriatric medical care will do
Monarchs of the mountain West, they once ranged all the way to the Eastern Seaboard. Now they are coming home
The beluga whales of Canada's St. Lawrence River have endured a lot over the years, but they're still around, and still controversial
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In competition, workaholic Border collies fetch, pen and shed to prove they have the right stuff
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A government report takes a look at what we have left and where we are heading
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Conservation and research remain key elements in the National Zoo's ever-expanding programs
Was it a scorpion? A spider? A snake? The toxin experts at APDIC can tell you what to do
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Oh yes, it's a touchy-feely creature all right, but the collared peccary, or javelina, has very big teeth and it knows how to use them
Never mind its savage reputation. The piranha is a pussycat most of the time
A Smithsonian scientist studies the relationship between Eocene insects and the plants they ate
Costa Rica's squirrel monkeys are adorable, charismatic, sexy and critically endangered
When grizzlies and black bears start hanging around people, Carrie Hunt and her feisty Karelians persuade them to go away
These ubiquitous herons are learning to live with people
A photographer's imaginary insect world mirrors our own, with beetles flying kites and six-legged warriors on the march
Caution: Unexpected birdsong can cause flashbacks that lift the listener out of time and place
Carolina dogs, discovered in the Southeast woods, may provide clues to the primitive dogs that arrived with the first humans in America
An American biologist treks the steppes and the Gobi to rescue a Mongolian raptor that's in deep trouble
For a walk on the wild side, follow the tracks of a tiger or look at a lion close up at the National Zoo
Loitering on sidewalks and begging at shops, macaques are familiar, but not always welcome, sights in cities across Asia
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