What are the strangest defense mechanisms in the animal kingdom?

The answer

The Texas horned lizard squirts blood from its eyes up to 1.5 meters, containing chemicals noxious to canine and feline predators. Sea cucumbers eject their internal organs (evisceration) through their anus to entangle attackers, regenerating everything within weeks. The hagfish produces up to 20 liters of suffocating slime in seconds, clogging the gills of attacking fish. Bombardier beetles spray a boiling (100°C) chemical mixture of hydroquinone and hydrogen peroxide at attackers with remarkable accuracy. The Iberian ribbed newt pushes its own ribs through its skin to create poisonous barbs. Malaysian exploding ants (Colobopsis saundersi) rupture their own bodies, spraying toxic glue to sacrifice themselves for colony defense.