Why do bearded dragons change colour?

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Why do bearded dragons change colour?

Clip from Scope  |  Season 3  |  Episode 2  |  ELEVEN  |  September 21, 2016
Classification: General Classification: General
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Bearded dragons change colours now scientists can determine the reason for the colour change. Is temperature one of the reasons dragon beards change colour

Bearded dragons change colours now scientists can determine the reason for the colour change. Is temperature one of the reasons dragon beards change colour

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