Enlarge this image Prairie voles mate for life and are frequently used to study human behavior. Todd H. Ahern/Emory University hide caption…
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Enlarge this image A California two-spot octopus extends a sucker-lined arm from its den. In 2015, this was the first octopus species…
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Enlarge this image Ariel Davis for NPR Ariel Davis for NPR For comedian Lewis Black, anger is a job. Black is famous…
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Enlarge this image Friend or foe? A California two-spot octopus (Octopus bimaculoides) gives observers the eye at the Marine Biological Laboratory in…
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Enlarge this image Fanatic Studio/Collection Mix: Sub/Getty Images Fanatic Studio/Collection Mix: Sub/Getty Images It’s just a cold. But even though I know…
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Enlarge this image Two bonobos play fight at the Lola Ya Bonobo sanctuary in Democratic Republic of Congo in 2012. Emilie Genty/Barcroft…
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Enlarge this image Turns out that humans aren’t the only animals that contagiously yawn. iStockphoto hide caption toggle caption iStockphoto Turns out…
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Enlarge this image Musi, an African elephant, is one of Fresno Chaffee Zoo’s five elephants enrolled in the Elephant Welfare Initiative. Courtesy…
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