Venomous and Poisonous Animals of South Africa: A Guide

South Africa's extraordinary biodiversity includes numerous venomous and poisonous species. While an exact count is elusive—definitions vary, and new species are still described—here are the medically significant groups encountered in the region.

Snakes (Venomous)

South Africa hosts ~170 snake species; ~20 are dangerously venomous. Key species:

• Black Mamba (Dendroaspis polylepis): Neurotoxic, fast, aggressive when cornered.
• Puff Adder (Bitis arietans): Cytotoxic, responsible for most bites due to camouflage and reluctance to flee.
• Boomslang (Dispholidus typus): Hemotoxic, rear-fanged, arboreal.
• Cape Cobra (Naja nivea): Neurotoxic, widespread, often near dwellings.
• Mozambique Spitting Cobra, Rinkhals, Gaboon Viper also notable.

Spiders (Venomous)

• Button Spiders (Latrodectus spp., including Black Widow): Neurotoxic.
• Six-eyed Sand Spider (Sicarius): Potent cytotoxin, rare bites.
• Sac Spiders (Cheiracanthium): Common in homes, cytotoxic.
• Note: The Sydney Funnel-web is Australian, not South African.

Scorpions (Venomous)

• Parabuthus spp. (e.g., P. transvaalicus): Neurotoxic, can spray venom; medically significant.
• Hadogenes spp. (Rock Scorpions): Large, less venomous to humans.

Insects

• Africanized Honey Bees: Defensive, swarm attacks.
• Wasps, hornets: Allergic reactions primary risk.

Marine Life

• Lionfish (Pterois): Venomous spines; invasive in some areas.
• Blue-ringed Octopus: Extremely potent neurotoxin (tetrodotoxin); rare in SA waters.
• Stonefish, Cone Snails, Jellyfish: Present in coastal waters.

Amphibians

• African Bullfrog (Pyxicephalus adspersus): Toxic skin secretions; mainly a risk if ingested or handled with broken skin.

Safety Principles

• Wear closed shoes and use a light at night.
• Do not handle or provoke wildlife.
• Seek immediate medical attention for any bite/sting—antivenom exists for major snake and scorpion species.
• Respect habitats; most encounters are preventable.