Sloths are ‘uniquely adapted to hanging around’

Sloths are uniquely adapted to hanging around doing very little, scientists have discovered.

The ponderous creatures, which spend 90% of their lives upside down, have internal organs fastened in place to prevent them squashing their lungs.

Famous for their slow pace of life, sloths can take a month to digest a single leaf and only go for a “number two” once a week.