| 31. | When a spider monkey sees a human approaching, it barks loudly similar to a dog.
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| 32. | The area is home to some 70 animal species, including jaguars, spider monkeys and tapirs.
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| 33. | This name was given due to the abundance of spider monkeys that inhabited this area.
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| 34. | Brown spider monkeys are known to shake branches in order to ward off potential predators.
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| 35. | Geoffroy's spider monkey lives in fission fusion societies that contain between 20 and 42 members.
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| 36. | A few spider monkeys played in one caged area.
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| 37. | Spider monkeys are susceptible to malaria and are used in laboratory studies of the disease.
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| 38. | Peruvian spider monkey are independent at about 10 months, with a lifespan of about 20 years.
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| 39. | The black-headed spider monkey is arboreal and diurnal.
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| 40. | Recent meta-analyses on primate cognition studies indicated spider monkeys are the most intelligent New World monkeys.
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