Can horned lizards spit blood out of their eyes?
Yes, at least four varieties of horned lizard do spit blood out of their eyes as a message for predators to back off! When threatened, a horned lizard has a detailed escape plan. First, it runs and stops suddenly, trying to confuse the predator. If that doesn’t work, its next line of defense is to puff up its body and show off its spiny scales. As a last resort, the lizard will increase the blood pressure in its head until small blood vessels in its eyes rupture. This causes blood to squirt out in a stream that can carry for up to three feet. The blood confuses the predator and tastes really bad, too—or at least canines and felines seem to think so.
