Brazilian wandering spider (Phoneutria fera) is a dangerous spider.
Neurotoxic venom levels rank as the highest in the world. A human,a bite from this spider can suffer with painful erections and
excruciating pain for weeks. The Brown recluse spider (Loxosceles spp) is another dangerous spider. It is found on all continents except Antarctica. The Southern black widow #spider (Latrodectus mactans), the spider that kills most people each year in the US, it has venom 14-15 times more powerful than that of a rattlesnake. Sydney funnel web spider (Atrax robustus), antivenom is available. They are aggressive when threatened. Red back spider (Latrodectus hasseltii) native to Australia and the female bites.
