大地懒是岛屿上体型最为庞大的哺乳动物之一，这可是相当惊人的，因为其本质就是一只巨型树懒……感觉像是大象与狗熊杂交出来的一样。 因为它的巨大体型，大地懒也是对击晕拥有超强抵抗力的一种生物。 尽管大地懒基本都是草食为主，不过大地懒对于摄取昆虫有相当的爱好，他特别擅长在不破坏外壳的同时，吃掉昆虫肉身，最大化地保留虫壳。只要这些昆虫出现，缓慢且平和的大地懒就突然变得快速并更具攻击性。
Common name: Megatherium
Species: Megatherium formipavor
Time: Late Pliocene-Early Holocene
Diet: Omnivore (primarily herbivore)
Temperament: Passive, but aggressive to insects
Megatherium formipavor is one of the larger mammals on the Island. This is most shocking because it is essentially a giant sloth...if you crossbred it with an elephant and a bear! Because of its size and girth, the Megatherium is uncommonly resistant to being knocked unconscious. Despite primarily being an herbivore, a typical Megatherium is very intent on consuming the Island's many insects. It is particularly adept at removing their insides without damaging much of the shell, maximizing extraction of chitin. The otherwise slow and peaceful Megatherium becomes faster and aggressive in the presence of these creatures.
Megatherium is an incredibly useful creature to tame, so long as you don't intend to fight other tribes. It's enormity, high resistance to torpor, and voracious attitude toward insects (and arachnids) makes it ideal for farming large quantities of chitin from the bugs of the Island, or simply defending against them.