Horses
share some surprisingly similar facial expressions to humans and
chimps. Despite the differences in face structure between horses and
humans, there are some similar expressions in relation to movements of
the lips and eyes. These findings will ultimately provide an important
information for veterinary and animal welfare practices.
Ref: Jen Wathan et al., 2015, PLOS ONE. DOI: 10.1371/journal.pone.0131738
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