The blue-tongued skink, a lizard native to the Australian continent, has a rather bizarre defence mechanism it sticks its bright-blue tongue out to predators and they actually run away, sometimes.

A subspecies of Tiliqua scincoides, the blue-tongued skink is one of only five animals known to have blue tongues, the other being the chow chow dog breed, the giraffe, the Impala, and the Okapi. However, it is the only one known for using this distinct physical feature to intimidate predators. When a blue-tongued skink feels threatened, it will start sticking out its blue tongue rapidly, and the contrasting blue tongue against the pink background of its mouth will actually make some animals think twice before attacking it.•