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A margay (Leopardus wiedii). From Wikipedia. Even if they spend years in the field, researchers rarely witness predation on primates. Cats, birds, and other hunters regularly feed on primate species, but what we know about the habits of primate-hunters often comes from bones and fingernails picked out of predator droppings. Every now and again, though,…

Spotted hyenas giggling over an antelope spine. Courtesy BMC Ecology. For spotted hyenas, a laugh can speak volumes about an individual. Despite being portrayed as stupid scavengers who rely on the leftovers of lion prides, hyenas are highly intelligent and social predators. They communicate with each other through an array of whoops, yowls, grunts, screams,…