Phobia is fear. Fear of just about anything animate or inanimate. br br Make sure to “Follow” the channel for more! br Watch more fascinating documentaries ► br br People know less but the brain sends special signals when one encounters a creature in front of them. In which case, fear is not irrelevant. The documentary tries to bring along a special coverage on spiders and all kinds of them too. Ultimately, it is declared that amongst the thirty five thousand known varieties, only thirty are the most deadly. This ascertains that one need not fear the house spider in most cases but one can totally avoid their presence.