Most of us are familiar with sloths, the bear-like animals that hang from trees, live life in the slow lane, take a month to digest a meal and poop just once a week. Their closest living relatives are ...

WASHINGTON — The National Zoo is grieving the loss of a 7-year-old sloth named Athena, who died after a "sudden and irreversible" health decline. According to the National Zoo, Athena developed ...

Sloths, the world's slowest mammals, have evolved over 64 million years into a species that thrives throughout Central America and northern South America, but climate change and human sprawl could be ...

World Sloth Day 2025 celebrates one of nature’s most intriguing and misunderstood creatures. Known for their incredibly slow pace, sloths embody a lifestyle that’s calm, patient, and perfectly adapted ...

Scientists have analyzed ancient DNA and compared more than 400 fossils from 17 natural history museums to figure out how and why extinct sloths got so big. Most of us are familiar sloths, the ...

Ancient sloths lived in trees, on mountains, in deserts, boreal forests and open savannahs. These differences in habitat are primarily what drove the wide difference in size between sloth species.