How do prehensile tails help some New World monkeys move through trees?

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polar bear and cubs — mammal Mother polar bear nursing her cubs (*Ursus maritimus*).

Some New World monkeys, such as spider monkeys, possess prehensile tails that function as a fifth limb, providing increased mobility and stability while moving through trees. These tails are capable of supporting the animal's entire body weight, allowing them to hang from branches by the tail alone.123

Beyond providing a secure anchor for hanging, the tail acts as a grasping tool that enables these primates to maneuver swiftly and agilely through the forest canopy. Because some of these monkeys have reduced or absent thumbs, the prehensile tail serves as a vital adaptation for locomotion, allowing them to pick up objects and maintain balance as they navigate their arboreal environment.3425