soft-shell, Malayan - toad, Siberian
- soft-shell, Malayan
- soft-shell, Mexican black
- soft-shell, smooth
- soft-shell, spiny
- soft-shells
- soft-shells, Malayan
- spadefoot, American
- spadefoot, common
- spadefoot, Couch's
- spadefoot, eastern
- spadefoot, Great Basin
- spadefoot, Hammond's
- spadefoot, New Mexico
- spadefoot, plains
- spadefoot, Southwest Asian
- spadefoot, Spanish
- spadefoot, western
- spadefoots
- sphenomorphus, Steere's
- sphenops
- sphenopses
- spine-foot, Bosk's
- spine-foot, Savigny's
- spine-foot, shielded
- squeaker, bush
- squeaker, common
- squeaker, dwarf
- squeaker, France's
- squeaker, large-toed
- squeaker, shovel-footed
- squeakers
- squeakers, bush
- stepperunner
- stinkpot
- stump-tail, rugose
- stump-tails
- sungazer
- sunwatcher
- suppon
- surucucu
