At a glance, koalas and sloths seem oddly alike. Both spend much of their lives in trees, move at an unhurried pace and sleep ...

The Smithsonian's National Zoo is home to three Linnaeus's two-toed sloths and shares some sloth basics, but here are three lesser-known sloth facts. 1. The Smithsonian has a collection of fossilized ...

The world has one more sloth species in it than previously thought. Maned sloths live in a small belt of forest in Brazil and an analysis now suggests those in the south are a different species from ...

Researchers have shed light on the activity patterns and behavioral adaptations of two sympatric sloth species, Bradypus variegatus and Choloepus hoffmanni. This study, conducted in the lowland ...

Deep within tropical forests, sloths move at a pace that seems almost frozen in time. Their slow movements, low energy use, ...