
Chapter 1
The survival strategy of being incredibly slow
Chapter 2
The mobile ecosystem living in sloth fur
Chapter 3
The dangerous weekly toilet trip
Chapter 4
From giants to tree dwellers
Chapter 5
Superpowers you didn't know they had
YOUR GOAL
Master of The secret life of sloths
Ch 4 · From giants to tree dwellers
artiteacher Sloth Evolution
Once we were giants, Shrank for the branches, Hanging on high!

artiteacher During the Pleistocene epoch, these giant beasts created paleoburrows stretching up to 100 meters long.

artiteacher A prehistoric sloth swims through warm, glowing ocean water near the sea floor.
Fun Fact
Avocado heroes: Giant ground sloths are the main reason avocados survived to modern times, as they ate and dispersed the giant seeds.
Glossary
megatherium (noun)
A genus of huge extinct ground sloths that lived in the Americas during the Pleistocene epoch. This prehistoric beast weighed up to four tons and stood nearly twenty feet tall.
A genus of huge extinct ground sloths that lived in the Americas during the Pleistocene epoch. This prehistoric beast weighed up to four tons and stood nearly twenty feet tall.
Quiz
What are the massive prehistoric tunnels dug by giant sloths in South America called?
Quiz
Which modern fruit survived extinction because giant ground sloths spread its massive seeds?
Quiz
Which genus of extinct ground sloths is credited with digging many of Brazil's paleoburrows?
Quiz
In which country were fossils of the ocean-dwelling sloth Thalassocnus discovered?
