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CMI article images.

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Article excerpted. Full text at link.

[Kartographer]

So how do they know its a ‘leftover’ or evolution? ;-)

[Billthedrill]

I love frisbee dogs. BTT

[lurk]

Easy to find out. Remove it from 100 dogs and see how they get along.

[Salamander]

How dogs used to look before their collar bones became vestigial;

[JoeFromSidney]

I'm dubious about vestigial organs. The human appendix was once considered a vestigial organ. It turns out the human appendix is a very important part of the body's immune system. We need to be careful about defining away something just because we don't understand what it does.