The Sydney Funnel-Web Spider, native to Australia, is notorious for its highly toxic venom. Its bite can cause severe pain, muscle spasms, and even death if not treated promptly.
Found mainly in the United States, the Brown Recluse is infamous for its necrotic venom, which can lead to severe skin ulcers and systemic reactions.
The Black Widow, recognizable by its glossy black body and red hourglass marking, is feared for its neurotoxic venom. Bites can cause intense pain, muscle cramps, and, in severe cases, death.
The Brazilian Wandering Spider, or armed spider, roams the forest floor in search of prey. Its venom is highly toxic and can cause priapism (painful, persistent erections) in males, along with other severe symptoms.
Native to southern Africa, the Six-Eyed Sand Spider’s venom can cause severe necrotic skin lesions and systemic symptoms. Its elusive nature and potent venom make it one of the deadliest spiders, though bites to humans are rare.
Another Australian native, the Redback Spider is closely related to the Black Widow. Its venom can cause severe pain and systemic reactions, but an effective antivenom is available.
The Chilean Recluse Spider, found in South America, is known for its necrotic venom that can lead to severe skin and tissue damage. Its bites often require medical intervention to prevent long-term damage and infection.
The Indian Ornamental Spider, found in India and Sri Lanka, is a large and aggressive spider. While it is not as venomous as others on this list, its bite can still cause intense pain and allergic reactions in some individuals.
Known as the Cupiennius Salei, this spider is native to Central and South America. Its venom is potent and can cause severe symptoms, though it is less aggressive than some of the other deadly spiders listed.