Megatheriums are super ez to gain early game advantage. They are great for harvesting berries and chitin . Easily tamable in the redwoods. Use a standard 2x2 stone foundation trap. Lure in. Tranq out. Food to tame is Sweet Honey . Also easily obtainable in the redwoods as well. Just use a crossbow with a grapple hook to a honey hive in the redwoods trees and you gain a stack of 5. Transfer honey to megatherium and bang bang. Early game monster.