A variety of studies are showing that rough-and-tumble play is important for animals and kids alike.

From giant stick bugs to rarely seen sea creatures, these animal videos fascinated us—and led to new scientific discoveries.

From an elusive jaguar to an industrious beaver, photographers captured iconic animal moments around the world.

From their odd appendages to their unsavory hygiene, certain animals suffer an image problem. But their awkward attributes can be their biggest advantages. Found across every continent except ...

Parrots and tortoises are flooding animal-rescue organizations around the country as many owners fail to make arrangements for their long-lived species. Gene Bordeaux, a staff member at Oasis, a ...

Cute features in babies and animals are more than just amusing—they trigger powerful evolutionary responses that help our species’ survival. Moo Deng, the baby pygmy hippo that has become famous ...

One of 11 kiwis returned to the wild outside Wellington gets a health check. The results: “Excellent,” says Paul Ward. Predators in the area have been reduced to the point where these birds have a ...

A new study based on two decades of data shows what happens in an ocean ecosystem without great white sharks. Great white sharks, like this one pictured in 2014, were once common residents in the ...