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Cheetahs discriminate familiar and unfamiliar human voices

机译:猎豹区分熟悉和不熟悉的人声

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摘要

Domestic species can make the distinction between several human sub-groups, especially between familiar and unfamiliar persons. The Domestication hypothesis assumes that such advanced cognitive skills were driven by domestication itself. However, such capacities have been shown in wild species as well, highlighting the potential role of early experience and proximity with humans. Nevertheless, few studies have been focusing on the use of acoustic cues in wild species and more comparative studies are necessary to better understand this ability. Cheetah is a vocal, semi-social species, often hand raised when captive, making it therefore a good candidate for studying the ability to perceive differences in human voices. In this study, we used playback experiments to investigate whether cheetahs are able to distinguish between the voices of their familiar caretakers and visitors. We found that cheetahs showed a higher visual attention, changed activity more often and faster when the voice was familiar than when it was unfamiliar. This study is the first evidence that wild felids are able to discriminate human voices and could support the idea that early experience and proximity to humans are at least as important as domestication when it comes to the ability to recognize humans.
机译:家养物种可以区分几个人类亚组,尤其是熟悉和不熟悉的人。归化假设假设这种高级认知技能是由归化本身驱动的。但是,这种能力也已在野生物种中显示出来,突显了早期经验和与人类亲近的潜在作用。然而,很少有研究集中于在野生物种中使用声音提示,而更多的比较研究对于更好地理解这种能力是必要的。猎豹是一种发声的,半社会性的物种,经常在被俘虏时用手举起,因此使其成为研究感知人声差异能力的理想人选。在这项研究中,我们使用回放实验来调查猎豹是否能够区分其熟悉的看护者和访客的声音。我们发现,与声音不熟悉相比,猎豹在声音熟悉时表现出更高的视觉注意力,更频繁,更快速地改变活动。这项研究是第一个证据,证明野猫能够区分人的声音,并且可以支持这样的观念:就识别人的能力而言,早期经历和与人的接近至少与驯化同等重要。

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