Watch this lizard shoot a five-foot stream of blood from its eyeballs

In a last-ditch effort to ward off predators, several species of horned lizards will increase the blood pressure in vessels surrounding their eyes, to the point that they actually rupture, gushing five-foot fountains of hemoglobin at the faces of coyotes, bobcats, and other beasts of prey native to the Sonoran desert.

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