Scientists Discover that Horses Are More Expressive Than Chimps

A new study suggests that horses are capable of 17 distinct facial expressions—more than have been identified in chimps, dogs, and cats.

Did the World's Most Famous Gorilla Ever 'Talk' Like Humans Did?

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Chimps Don't Cry: Behind the Science of 'Dawn of the Planet of the Apes

Chimpanzees Remember Things Faster Than You Do, Smart News

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Horses discriminate between facial expressions of conspecifics

Summer of the Monkeys (1998) - IMDb

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Study: Domestic Horses Can Detect Negative Emotion in Human Facial Expressions - The Atlantic