10 Most Terrifyingly Poisonous Animals In The Universe

7) Brazilian Wandering Spider

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The Brazilian wandering spider, also known as the banana spider, is an ugly beast. The spider’s venom includes a neurotoxin called PhTx3 which causes paralysis and eventually kills you through asphyxiation as your breathing muscles give up the ghost. The bite includes a delivery of a butt-tonne of serotonin which makes the bite swell extensively and feel immaculately painful.

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As an added advantage / disadvantage (depending on your situation) the bite can also lead to a priapism. Yup, that’s a painful, permanent erection. So that’s nice.