Rain Frog
Red-eared Slider
Reticulated Python
Rhinoceros Iguana
Rhinoceros Viper
Slow Worm
Sharp-ribbed Salamander
Short-horned Lizard
Smooth Snake
Solomon Islands Skink
South American Rattlesnake
Southern Toad
Speckled Rattlesnake
Spiny-tailed Lizard
Spiny-tailed Monitor
Standing's Day Gecko
Strawberry Poison-dart Frog
Surinam Horned Frog
Surinam Toad
Tawny Plated Lizard
Tentacled Snake
Texas Horned Lizard
Texas Lyre Snake
Tiger Salamander
Tigre
Tiliqua Rugosa
Tomato Frog
Trans-Pecos Copperhead