Snakes Control Blood Flow to Boost Vision At least for one snake species, when the slitherer feels threatened, it controls the blood flow to its eyes to ensure that its sight is unobstructed, a new study found. The research focused on the coachwhip snake (Masticophis flagellum), a thin, nonvenomous species that is found across the United States and Mexico and can range in color from brown to pink. While examining the eye of a coachwhip ...
Nov. 11, 2013 - LiveScience.com via Yahoo! News