Atrax robustus produces a poison that attacks the human nervous system and other primates. It is interesting that this poison is completely harmless for most other mammals. Although there is a reliable antidote to the pain of bite of a spider, it evokes a feeling of bursting lungs.
Parabuthus transvaalicus is a scorpion, which inhabits the African continent desert. It is capable of spraying venom to a distance of a meter, but it is also not averse to bite the offender. Its venom causes a person cramps and spasms, causing nerve to pull the limbs during the day.
The Aga Toad, one of the largest frogs of the world, is able to accurately spitting dangerous psychedelic venom. In addition to hallucinations, it also causes salivation, convulsions and vomiting.
Lonomia obliqua is a Brazilian butterfly caterpillar of the species of Lonomia Moths, armed with a unique poison. By its effects in human body hemorrhagic syndrome arises which may lead to serious disturbances in the internal organs and death.
Phoneutria spiders attack and protect by poison containing the PhTx3 neurotoxin, leading to a gradual paralysis of muscles and asphyxiation. Special danger gives the fact that itself a bite is relatively painless, and people do not always pay the necessary attention to it.