Fossilized feces shows some dinosaurs gathered in ‘poop groups,’ like elephants or camels

Some large, grass-eating mammals, such as elephants, rhinos and camels, gather together not only when they eat, but also when they defecate. The group poop, researchers have surmised, has several important functions. One is hygiene, to prevent the emergence of new parasites; another is safety, to...Image may be NSFW.
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