[Ateles geoffroyi]
Habitat: Mature rainforest and montane (mountainous) forest
Height: 15-25"
Weight: 12-16 lbs
Max Lifespan: 27 years
Gestation Period: 7 to 8 months
Number of Young: 1

- live mainly in the top of the tree canopy and rarely descend to the ground
- unlike most primates, spider monkeys have 4 fingers and no thumb
- females are generally the dominant sex as they get the choicest food, defend the group and choose with whom to mate