- Scorpions, Order: Scorpionida / Scorpiones
- Scorpions, Treatment for stings
- Sea blubbers, Class: Scyphozoa, Genus: Cyanea, Species: C. capillata
- Sea snakes, Family: Hydrophiidae
- Sea wasp
- see Box jellyfish, Class: Cubozoa, Genus: Chironex, Species:C. fleckeri
- Shire, Professor
- Small eyed snakes, Family: Elapidae, Genus: Cryptophis, Species: C. nigrescens
- Small scalled snake
- see Fierce snakes, Family: Elapidae, Genus: Oxyuranus, Spieces: O. microlepidotus
- Snake and anti-venom stocks in Australian zoos
- Snake bite
- Snake bite, Current treatments
- Snakes, Australian, Class: Reptilia, Order: Squamata, Suborder: Serpentes
- Southcott, Ronald Vernon (1918 - 1998)
- The Spider Lady
- see Midgely, Helen
- Spiders, Treatment for bites
- Spiders, Australian, Class: Arachnida, Order: Araneae
- Spotted black snakes, Family: Elapidae, Genus: Pseudechis, Species: P. guttatus
- Staff, associates, collaborators, Australian Venom Research Unit
- Stephen's banded snakes, Family: Elapidae, Genus: Hoplocephalus, Species:H. stephensi
- Stinging ants, Order: Hymenoptera, Suborder: Apocrita
- Stinging fish
- Stinging fish, Treatment - including stone fish and stingray injuries
- Stingrays, Order: Myliobatiformes
- Stone fish, Family: Synancejidae, Genus: Synanceia
- Strychnine - injection, Outdated treatment
- Sutherland, Struan (1936 - 2002), Scientist
- Syncope
- Systemic
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