| 21. | In African vervet monkeys, related females often form groups and gang up on males.
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| 22. | Vervet monkeys of East Africa were the first species documented to have distinct aural descriptions of predators.
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| 23. | The green vervet monkeys in the rain forests up in the hills are more of a problem.
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| 24. | The vervet and malbrouck have often been considered conspecific, or as subspecies of the widespread grivet.
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| 25. | Hybridization between them is possible, and may present a threat to the vulnerable Bale Mountains vervet.
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| 26. | Common warthogs have also been observed allowing banded mongooses and vervet monkeys to groom them to remove ticks.
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| 27. | Their fur is grey green on top and whitish on their underside, much like the vervet monkeys.
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| 28. | Campbell's mona monkeys also generate alarm calls, but in a different way than vervet monkeys.
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| 29. | Research done on vervet monkeys showed that male and female monkeys gravitated towards sex-typical preferred toys.
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| 30. | In the field, researchers play tape recordings of vervet monkey cries to see how these affect real monkeys.
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