E-zoology (My Perspective)

   

 Brown and Chilean Recluse Spider

The Brown recluse spider and a sister species, the Chilean recluse, are extremely venomous. However, on the plus side, they have small fangs and can't penetrate clothing easily. They are also, well, recluses, which means there are not as many bites as there might be due to their habit of hiding.
Some of the most dangerous symptoms of their bites are necrosis – the dying of tissue at the site of the bite – and the potential for the wound to grow to 10 inches and become gangrenous. About 14 percent of the symptoms are systemic, meaning an infection is caused throughout the body. The Chilean recluse spider is even more toxic, with some systemic infections resulting in kidney failure. One study in Chile showed that 3-4 percent of all bites ended in death. The lethal dose of the Chilean recluse's venom in tests on lab mice in 50% of the victims – its LD-50 – is 1.45mg/kg, so this is definitely a spider to steer clear of.