The crisp, clean night air is appealing to anyone–and these sauropods are no exception. To be sure, this diplodocus soaks up a ton of ambient heat during the day. But because of their mass, that heat is slow to dissipate. 

Hence the appeal of moving around at night. That’s especially true in the northern latitudes, where (despite global warming) the night can still feel cool. As a result, the diplodocus will do most of its feeding during the day–but if there’s a long distance to travel, such migrations usually favor the breezy, cool nights.

A diplodocus will sing as it moves–much like a whale. And that only adds to the spooky, majestic, and unearthly quality of these very earthbound animals.

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