# How long has this animal existed?

**URL:** <https://boards.straightdope.com/t/how-long-has-this-animal-existed/597253>\
**Category:** Factual Questions\
**Created:** [September 22, 2011, 9:26pm UTC](https://boards.straightdope.com/t/how-long-has-this-animal-existed/597253 "2011-09-22T21:26:28Z")\
**Posts on this page:** 1\
**Page:** 2

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**Author:** ![KarlGauss](https://sea3.discourse-cdn.com/straightdope/user_avatar/boards.straightdope.com/karlgauss/32/3713_2.png) [@KarlGauss](https://boards.straightdope.com/u/KarlGauss)\
**Post date:** [September 23, 2011, 3:16pm UTC](https://boards.straightdope.com/t/how-long-has-this-animal-existed/597253/21 "2011-09-23T15:16:35Z")

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> [@Hari\_Seldon](#):
>
> Under human selection, a species can change its appearance dramatically over a few hundred years. All dogs are the same species, but different breeds look very different. Read Darwin on pigeon varieties too. But this is just superficial appearance.

The [Peppered Moth](http://en.wikipedia.org/wiki/Peppered_moth_evolution)is a good example of response to human-induced changes.

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