Lizard's bright UV tongue helps to scare off predators

The blue-tongued skink, also known as a blue-tongued lizard, is already fascinating due to its colourful gob, but researchers have discovered its secret power.

Ordinarily when threatened, the lizard uses its tongue as a warning to predators.

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But it's the final throes of the skink's defence that has excited researchers: As a last-ditch attempt, it shows the back of its tongue, which is more UV-intense and luminous compared to the front. 

That could be a useful defence against its main predators, such as birds, snakes, and monitor lizards, who are thought to have UV vision.  Read more...

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