For historical perspective: Paleontologist Othniel Charles Marsh (1831-1899) once posited the intriguing notion that dinosaurs, specifically the stegosaurus, possessed a second brain located in their hips which served to help these massive creatures locomote more efficiently. The peer-reviewed truth proved otherwise but the idea still bounces around from time-to-time like silly-putty, especially in the brains of web-cartoonists.