Roland Seitre / Brown-throated Three Toed Sloth (Bradypus variegatus) and Hoffmann's Two Toed Sloths (Choloepus hoffmanni) babies being fed. Aviarios del Caribe Sloth Refuge, Costa Rica, 2008.

Roland Seitre / Brown-throated Three Toed Sloth (Bradypus variegatus) and Hoffmann's Two Toed Sloths (Choloepus hoffmanni) babies held by orphanage owner, Judy Avey-Arroyo. Aviarios del Caribe Sloth Refuge, Costa Ric...

Luiz Claudio Marigo / People taking photographs of a Brown-throated Three-toed Sloth (Bradypus variegatus) in Parque Centenario, downtown Cartagena de Indias city, Magdalena Department, Colombia, February 2011.

Michael Pitts / Looking up at Three toed / Pale throated sloth {Bradypus tridactylus} swimming across mangrove channel, South America

Staffan Widstrand / Brownthroated / Three-toed sloth carrying young {Bradypus variegatus} Brazil.

Pete Oxford / Brown throated three toed sloth {Bradypus variegatus} climbing tree. Amazon, Brazil

Staffan Widstrand / Brownthroated / Three-toed sloth carrying young up tree {Bradypus variegatus} Rio Negro, Brazil, South America

Bernard Castelein / Brown-throated sloth ( Bradypus variegatus), between Rurrenabaque and Sancta Rosa, Bolivia

Lucas Bustamante / Brown throated three toed sloth (Bradypus variegatus) hanging from branch, Yasuni National Park, Orellana, Ecuador.

Lucas Bustamante / Juvenile of Three-Toed Sloth (Bradypus variegatus) hanging on a tree. Yasuni National Park, Orellana, Ecuador.

Ingo Arndt / Brown-throated three-toed sloth (Bradypus variegatus) on branch above river in rainforest, Peru

Ingo Arndt / Brown-throated three-toed sloth (Bradypus variegatus) hanging from branch above river in rainforest, Peru