10 Worst Evolutionary Designs

Wired’s got the run down, here they are in simple list form:

1 Sea mammal blowhole. 2 Hyena clitoris. 3 Kangaroo teat. 4 Giraffe birth canal. 5 Goliath bird-eating spider exoskeleton. 6 Shark-fetus teeth. 7 Human stomach. 8 Slug genitalia. 9 Quadrupeds. 10 Narwhal tusk.

Click here to find out why they’re each so bad.

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