By Laura Geggel – Associate Editor

The first dinosaur butthole ever discovered is shedding light where the sun don’t shine. The discovery reveals how dinosaurs used this multipurpose opening — scientifically known as a cloacal vent — for pooping, peeing, breeding and egg laying. 

The dinosaur’s derrière is so well preserved, researchers could see the remnants of two small bulges by its “back door,” which might have housed musky scent glands that the reptile possibly used during courtship — an anatomical quirk also seen in living crocodilians, said scientists who studied the specimen.

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