This is the blood-squirting lizard. And yes, what it is known for is the ability to shoot blood OUT OF ITS EYE!
Only a few species of horned lizards are equipped with this unique and disgusting ability in which they increase blood pressure in the head until blood come spewing out from the corners of their eyes with a range of up to one meter!
One obvious use of this defence mechanism seems to be against dogs, wolves and other canines as the blood contains a chemical that is noxious to them. In fact, it is difficult for scientists pretending to be dogs to get the horned lizard to squirt blood, showing that they can distinguish between the two.
(Via: Biology Bizzarre)
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