International authorities are issuing warnings about "sloth fever." Despite the name, it's not contracted via contact with sloths. Rather, you should avoid contact with mosquitoes and biting midges.

The survival of sloths is under threat due to climate change, according to a new study. The famously slow-moving — and adorable — creatures of Central and South America could die out if ...

Today’s sloths are small, famously sluggish herbivores that move through the tropical canopies of rainforests. But for tens of millions of years, South America was home to a dizzying diversity ...

South American megafauna, from giant sloths to camel-like creatures, survived thousands of years longer than we thought, challenging the idea that they were hunted to extinction by humans ...

We know that the extinction of megafauna, in South America at least, was around 10,000 years ago. This is at least 17,000 years after the arrival of the humans who modified the giant ground sloth ...

A virus found in sloths and spread by mosquitos in South America has now been found in the US. The US Centers for Disease Control issued a warning about the Oropouche virus after 11 Floridians ...

U.S. health officials are warning travelers about a potentially deadly insect-borne virus known as sloth fever that has infected 21 U.S. residents returning from Cuba and thousands more in South ...

Oropouche virus, or sloth fever, is still found mostly in a few countries in South America, Central America, and the Caribbean. However, travelers can bring it home if they become infected while ...

Today, two sloth species dwell in Central and South America. But long ago, dozens of sloth species populated the Americas, all the way from Argentina to Canada. Like modern-day sloths, the smaller ...

SAO PAULO (AP) — Sloths weren’t always slow-moving, furry tree-dwellers. Their prehistoric ancestors were huge — up to 4 tons (3.6 metric tons) — and when startled, they brandished immense ...

International authorities are issuing warnings about "sloth fever." Despite the name, it's not contracted via contact with sloths. Rather, you should avoid contact with mosquitoes and biting midges.