Have you ever wondered why insects even bigger than the spider get stuck in the web but the spider doesn't. Spiders spin sticky webs to help them catch bugs for their meal. But, if a bug gets caught in its web why doesn't the spider get stuck in it?
There is a secret in the thread the spider uses to build its web. It weaves its web with two different types of threads. One is the sticky one for the bugs and other insects. The other thread is non sticky which is for the spider to move within its web without getting stuck. Not every strand of a spider's web is sticky, and when it builds its web, it keeps in mind which strands are the sticky ones and which are not.
When the spider moves across the strands, it makes sure that it steps only on the non-sticky strands. Occasionally, a spider will accidentally step on one of the sticky parts of the web. This is when the spiders long and thin legs help them. Even if one or two legs get stuck, it uses its other legs to pull the other legs free.
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