Cornered by a coyote, this lizard shoots blood out of its own eyes

When a canid predator clamps down on a horned lizard, it can restrict blood flow leaving its head until vessels near the eyelids rupture, firing a jet of blood up to 1.5 metres. Herpetologist Wade Sherbrooke found the trick works because the blood tastes foul to canines, laced with toxins absorbed from the venomous ants the lizard eats.

— Wade C. Sherbrooke, Blood-Squirting Variability in Horned Lizards (Phrynosoma) — Copeia/Ichthyology & Herpetology, 2001, and related field research

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