Wise On on Instagram: "Some defenses look like horror movie effects… but they’re real biology. A few snakes can perform autohaemorrhaging (deliberate blood release) as a last-resort defense, including a Bahamian pygmy boa (Tropidophis curtus barbouri) where researchers documented blood appearing around the eyes during a defensive display. The idea is shock value: a sudden blood “burst” can startle a predator long enough to create an escape moment. Similar pressure-driven eye-blood defense is fam