Researchers didn’t know how people would react to weightlessness. So they sent animals first.
The classic wooden ones aren’t quite cutting it. Conservationists are now turning to 3-D printing and augmented reality.
As service animals, capuchins change people’s lives—but they may suffer in the process.
The National Zoo’s newest resident isn’t colorful or exotic. That’s exactly the point.
Their experiments confirm that sex is pleasurable, even for animals we think of as simple.
Two recently married Harvard grads embark on a quest sketch all 112 justices in U.S. history as animals
A contentious way to teach captive animals what to fear in the wild
Animal suffering is incredibly difficult to measure. So is whether or not it actually benefits research.
The bushfires were a disaster waiting to happen for animals already fighting for survival.
By killing the biggest animals, we’ve allowed smaller and more vulnerable species to remodel the terrain.