Encyclopedias, Almanacs, Transcripts, and Maps
- Spittle and Spitting
- Splitjaw Snakes (Bolyeriidae)
- Spode, Josiah
- Spoil
- Sportive Lemurs Lepilemuridae
- Sports and Religion
- sprat
- Springhares (Pedetidae)
- Squaliformes (Dogfish Sharks)
- Squamata (Lizards and Snakes)
- square root
- squares, cubes and roots
- Squatiniformes (Angelsharks)
- Squeakers and Cricket Frogs (Arthroleptidae)
- Squirrels and Relatives I: Flying Squirrels (Pteromyinae)
- Squirrels and Relatives II: Ground Squirrels
- Squirrels and Relatives III: Tree Squirrels
- Śrī Vaiṣṇavas
- St Bernard
- St John of Jerusalem, Knights Hospitallers of