The apparent friendliness of “smiling” sloths have made them tourist darlings, but have also put a target on their backs. In their home range of South and Central America, tourism companies encourage ...

Sloths are among the strangest mammals on Earth. They move incredibly slowly, sometimes only a few feet per minute, and can hang from a single limb for long periods of time. Their metabolism is the ...

mRNA vaccines saved millions of lives during COVID-19 but have limitations like waning immunity and complex production. Scientists are now testing a new platform called DoriVac, which uses folded DNA ...

Visitors to the Bioparc zoo near Malaga were treated to a rare spectacle of nature as a two-toed sloth gave birth in dramatic, high-altitude fashion. A female sloth named Reina delivered a healthy cub ...

They’re slow, they’re sleepy, and they’ve taken over the internet—but sloths are more than just cute animals hanging from trees. These leaf-munching creatures live a strange and fascinating life in ...

The orca, or killer whale (Orcinus orca), is a curious combination of fearsome predator and charismatic marine mammal. These large, black-and-white members of the dolphin family live in all the ...