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When it comes to creative survival tactics in the animal kingdom, few creatures can compete with a small, spiky reptile that weaponizes its own blood. The greater short-horned lizard (Phrynosoma ...

The horned lizard relies on camouflage until there is nowhere left to hide. When a predator closes in, it deliberately ruptures blood vessels behind its eyes. A stream of foul-tasting blood sprays ...

Out in the dry scrublands of the American West, a squat, spine-covered reptile spends its days nearly invisible against the sand, dust and stone. The greater short-horned lizard (Phrynosoma hernandesi ...