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There is a species of spider that builds models of itself, which it uses as decoys to distract predators. The spider may be the first example of an animal building a life-size replica of its own body. So believe the scientists who made the discovery, which is published in the journal Animal Behaviour. The arachnid's behaviour also offers one explanation for why many spiders like to decorate their webs with strange-looking ornaments.
BBC - Earth News - Spider builds life-sized decoys
<img class="aligncenter size-full wp-image-42255" title="sickles2" src="http://www.wired.com/images_blogs/wiredscience/2010/11/sickles2.jpg" alt="" width="660" height="252" /> This is just amazing. Ninety-two years and a few months ago, a US Army private died at what is now called Fort Riley, Kansas. It was July 1918, and the 21-year-old recruit had been sick for two days with a fever and a headache, an aching chest and a hard, hacking cough that didn’t bring anything up.

