The image starkly depicts the challenges sloths face as humans increasingly encroach on their habitat. All five species of ...

Sloths hang upside down all day because it is their natural posture, which allows them to access food and save energy.

For years scientists assumed that sloths don't fart — believing the methane produced by their slow digestive system was simply absorbed into their bloodstreams and breathed out through their mouths.

For years scientists assumed that sloths don't fart — believing the methane produced by their slow digestive system was simply absorbed into their bloodstreams and breathed out through their mouths.