When the total solar eclipse happens on Monday, animals at homes, farms and zoos may act strangely. Researchers can’t wait to see what happens when day quickly turns to night. By Juliet Macur and ...

The National Zoo generally is a family-friendly place, but at the Woo at the Zoo event Friday night, it was all about wild animal sexual behavior. “We like to say we’re a free zoo where animals can ...

When I met Nikita, the majestic, golden-eyed female Amur tiger at the National Zoo in D.C., she might have been pregnant. (We should know any day now; her cubs would be due in June.) But she had never ...

Hey Ladies: Walrus Busts Out Attention-Grabbing Mating Calls at Washington Zoo A male walrus at a zoo in Tacoma, Washington, delighted his keepers by illustrating the species’ entertaining mating ...

While millions of people are preparing to watch the total solar eclipse that will make its way across North America on Monday, the animals in that affected area — in homes, on farms, in zoos and in ...