Spiders are eight-legged predatory creatures. They have organs to spin silk at the back end of their body. This silk is made of tough strands of protein. It is the strongest natural fiber known. Its tensile strength is more than a bone and half the strength of steel.
There are approx 40,000 types of spiders in the world. All spiders have the ability to kill the prey by biting with venom injecting fangs. Nearly all spiders are poisonous.
A brown recluse spider venom can cause significant cutaneous injury with tissue loss and necrosis. A Black Widow Spider can inflict a painful bite, that can be fatal to the young and elderly.
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