Giant ground sloths were large, herbivorous mammals that lived during the Pleistocene epoch, around 2.5 million to 10,000 years ago. They belonged to the group of animals known as megafauna and could grow up to 13 feet long. These creatures primarily inhabited the forests and grasslands of North America and South America. These sloths were closely related to modern sloths but were much larger and more robust. They had long limbs and strong claws, which they used to reach high vegetation. Fossils of giant ground sloths have been found in various locations, providing valuable insights into their behavior and environment.