Do you know the Black widow spider?
It is the most venomous spider in North America
The venom of the female black widow spider is 15 times as toxic as the venom of the Prairie Rattlesnake. Only a minute amount of the toxin is injected in a single bite by the spider however, so they are rarely fatal. By comparison, the relatively large amount of injected rattlesnake venom results in about 15 to 25 percent mortality among those bitten.
The male Black Widow cannot bite humans, because the fangs arent long enough to penetrate the skin.
Spider silks have some of the best mechanical properties of any known natural fibers, thus they are being considered in the improvement of a variety of products including surgical microsutures and specialty ropes. Dragline silk -- just one type of the seven different silks that an individual spider produces -- are used by spiders as the structural foundation of their webs and to support their body weight as they move about. The dragline silk of black widows is one of the strongest and toughest spider silks identified thus far