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While on an expedition in Nigeria in 2009, researchers noticed a curious bark-like call in the night. It turns out the source was a creature new to science, a species of tree hyrax — small, herbivorous mammals — called Dendrohyrax interfluvialis.
It’s not easy to confirm a new species, especially when it comes to an elusive, nocturnal, forest-dwelling animal in a remote region. The scientists
(In the video, the “shriek” sound of another hyrax species is played first, which contrasts with the “bark” of the newly described species, played second.)
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