Why do some animals have blue tongues?


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John McCann answered

It is posited that the lizards skinks have them to ward off predators. Some rattlesnakes have them too and it is also though to be a warding device.

Giraffes have blue tongues and some biologists think this is to prevent sunburn of the tongue, but there is no evidence for this. Chow chows have them and no reason has been given here.

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