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Vomiting in Wild Bonnet Macaques |
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| Authors: | Elizabeth C Johnson Eric Hill Matthew A Cooper |
| Institution: | (1) Department of Psychology, Oglethorpe University, Atlanta, Georgia 30319, USA;(2) Present address: Department of Psychology, Arizona State University, Tempe, Arizona, USA;(3) Department of Psychology, Georgia State University, Atlanta, Georgia, USA |
| Abstract: | Researchers have not studied vomiting that is not associated with pathological behavior in nonhuman primates. Scientists generally assume that vomiting provides protection by ejecting toxins from the body, but the explanation is not fully supported by the literature. We report on 163 instances of vomiting from 2 groups of free-ranging bonnet macaques in southern India. The macaques routinely reingested their vomit. The reingestion was unlike that in abnormal behavior of both humans and nonhuman primates. We suggest that the tendency to hoard food in their cheek pouches explains why they reingested the vomit. |
| Keywords: | diet emesis feeding ecology macaque vomit |
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