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An [[Arctic Fox]] is a [[mammal]] specially [[Adaptation|adapted]] with thick white [[fur]] to live in an [[arctic]] [[habitat]].

| style="height:20px; width:200px; text-align:center;" |Millions of years ago the '''arctic fox''' had dark [[fur]] and lived in the woods. When it snowed they were not very well [[camouflage]]d camouflaged and found it difficult to hunt. [[Variation]] meant some had slightly lighter coloured [[fur]] and were able to get more food so they had more [[offspring]].| style="height:20px; width:200px; text-align:center;" |The next [[generation]] inherited the trait of slightly lighter coloured fur. [[Variation]] meant that some were born with even lighter [[fur]]. Those were more likely to survive and have [[offspring]].| style="height:20px; width:200px; text-align:center;" |In the [[arctic]] [[habitat]] eventually all the foxes with dark [[fur]] became [[Extinction|extinct]] and only ones with white [[fur]] were left.