Many of us have gotten dizzy when we stand up too fast—and we don't even have to go that far. Imagine if you had to lower and raise your head several stories every time you wanted a drink of water.

Our Weird Animal Question of the Week comes to us from Clayton Louis Ferrara, who asked via Facebook: "How did large, long-necked sauropod dinosaurs, such as Brachiosaurus, drink water without [losing] consciousness when bending over?" (Also see "Giant Dinosaurs Stuck Their Necks Out, Not Up?")

There's no particular evidence to show how Brachiosaurus and other giant dinos drank, but "obviously they could," Casey Holliday, of the University of Missouri's Department of Pathology and Anatomical Sciences, said by email.

Like giraffes and