Chilean recluse spider
The venom of Loxosceles laeta is potentially fatal depending on the inoculum-mass ratio of the individual.  Its action is essentially proteolytic and necrotic (dissolves tissues causing cell death). It contains powerful proteolytic enzymes that destroy everything that has protein, and can be 15 times more toxic than a cobra and 10 times more powerful than sulfuric acid burn. In addition, its venom has a high power of penetration in the liver and bile ducts. Its main toxic component is sphingomyelinase D, which interacts with cell membranes, triggering an immune reaction within the first 24-48 hours after the bite.