Sloths, the famously slow-moving yet adorable creatures native to Central and South America, could face extinction by the end of the century due to climate change. Researchers investigating how sloths ...

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 ...

People expect sloths to behave like other tree-dwelling animals. Their body temperature changes with the environment, and ...

While humans wouldn’t be very happy to find that organisms were growing on their skin, particularly fungi, algae, and insects, it works out pretty well for sloths. Sloths may be hosting entire ...

The Tulsa Zoo is home to thousands of animals, but some of the most popular residents may be harder to spot during a visit. Sloths spend much of their day hanging in trees, conserving energy and ...