Green blood skinks

Mark's Zoo & Botanical Garden

Via ScienceAlert

The phenomenon is due to a pigmented compound called biliverdin, which has a green hue and in high concentrations is toxic to humans. Researchers believe the skinks evolved a tolerance to biliverdin because it provides protection against certain parasites such as plasmodium.

Read more: http://bit.ly/17uZaj2 via National Geographic

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