Brown hyena (Hyaena brunnea) with erect hair. Piloerection is a muscle reflex in mammals which causes hair become erect. This can help the hyena appea

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Brown hyena (Hyaena brunnea) with erect hair. Piloerection is a muscle reflex in mammals which causes hair become erect. This can help the hyena appear more threatening. Photographed in the Kalahari Desert, South Africa.

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Size: 5041px × 3468px
Photo credit: © PETER CHADWICK/SCIENCE PHOTO LIBRARY / Alamy / Afripics
License: Licensed
Model Released: No

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