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Since 1st March, 1999
 
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Why does a chameleon change colour' A chameleon changes colour when it senses danger. This remarkable member of the lizard family can change colour to match its background or, at least, to become almost unrecognisable. Apart from its response to danger, the chameleon changes colour according to the light and temperature.

This mechanism is controlled from the nervous system and involves the dispersion or concentration of colour pigments in the creature's skin.

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