The sloth spends most of its life upside down moving very slowly through the trees. In coupling, both animals hang from a branch by their forelimbs, face to face. The breeding season is from March to April and gestation lasts for 120 days.
    When giving birth, the sloth hangs from a branch, the young sloth baby emerges head first without an embryonic membrane and proceeds to pull itself up the mother's belly; in fact, assisting its own birth. A newborn sloth is 25 cm. long (10") and weighs 300 to 400 gm (10 to 14 oz.). The infant is carried on its mother's upturned belly. It is not independent for 9 months.