| Rana, Pool/True Frogs | |
| ~ of Europe | |
| Ranidae, Pool/True Frogs and relatives | |
| Ratsnakes, An Introduction to | |
| Red-Tailed Boa, see Boa constrictor | |
| Regina, Queen- and Crayfish Snakes | |
| Rhacophoridae, Foam-Nest Frogs | |
| Rhinodermatidae, Mouth-Brooding Frogs | |
| Rhinophrynidae, Burrowing Frog | |
| Rhynchoedura, Beaked Gecko | |
| Ristella skinks | |
| Russell's Viper, see Daboia | |
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