Salamanders (Caudata)
Mole Salamanders (Ambystomatidae)
- Tiger Salamander (Ambystoma tigrinum)
- Northwestern Salamander (Ambystoma gracile)
- Long-toed Salamander (Ambystoma macrodactylum)
Giant Salamanders (Dicamptodontidae)
Torrent Salamanders (Rhyacotritonidae)
- Columbia Torrent Salamander (Rhyacotriton kezeri)
- Southern Torrent Salamander (Rhyacotriton variegatus)
- Cascade Torrent Salamander (Rhyacotriton cascadae)
Newts (Salamandridae)
Lungless Salamanders (Plethodontidae)
Woodland Salamanders (Plethodon)
- Dunn’s Salamander (Plethodon dunni)
- Larch Mountain Salamander (Plethodon larselli)
- Western Red-backed Salamander (Plethodon vehiculum)
- Del Norte Salamander (Plethodon elongatus)
- Siskiyou Mountains Salamander (Plethodon stormi)
Ensatinas (Ensatina)
Climbing Salamanders (Aneides)
Slender Salamanders (Batrachoseps)
- Oregon Slender Salamander (Batrachoseps wrighti)
- California Slender Salamander (Batrachoseps attenuatus)
Frogs and Toads (Anura)
Tail-wagging Frogs (Leiopelmatidae)
Spadefoot Toads (Pelobatidae)
True Toads (Bufonidae)
- Western Toad (Anaxyrus boreas, formerly Bufo boreas)
- Woodhouse’s Toad (Anaxyrus woodhousii, formerly Bufo woodhousii)
Treefrogs (Hylidae)
True Frogs (Ranidae)
- Northern Red-legged Frog (Rana aurora)
- Oregon Spotted Frog (Rana pretiosa)
- Cascades Frog (Rana cascadae)
- Colombia Spotted Frog (Rana luteiventris)
- Foothill Yellow-legged Frog (Rana boylii)
- Northern Leopard Frog (Rana pipiens)
- Bullfrog (Lithobates catesbeianus, formerly, Rana catesbeiana)
Turtles (Testudines)
Emydid Turtles (Emydidae)
Lizards (Squamata)
Anguids (Anguidae)
- Northern Alligator Lizard (Elgaria coerulea)
- Southern (or California) Alligator Lizard (Elgaria multicarinata)
Crotaphytids (Crotaphytidae)
- Great Basin Collared Lizard (Crotaphytus bicinctores)
- Long-nosed Leopard Lizard (Gambelia wislizenii)
Phrynosomatids (Phrynosomatidae)
- Pygmy Short-horned Lizard (Phrynosoma douglassii)
- Desert Horned Lizard (Phrynosoma platyrhinos)
- Sagebrush Lizard (Sceloporus graciosus)
- Western Fence Lizard (Sceloporus occidentalis)
- Side-blotched Lizard (Uta stansburiana)
Skinks (Scincidae)
Whiptails (Teiidae)
- Western Whiptail (Aspidoscelis tigris, formerly Cnemidophorus tigris)
- Plateau Striped Whiptail (Aspidoscelis velox, formerly Cnemidophorus velox)
Snakes (Squamata)
Boas (Boidae)
Harmless Egg-laying Snakes (Colubridae)
- Racer (Coluber constrictor)
- Sharptailed Snake (Contia tenuis)
- Common Kingsnake (Lampropeltis getula)
- California Mountain Kingsnake (Lampropeltis zonata)
- Striped Whipsnake (Masticophis taeniatus)
- Pacific Gopher Snake (Pituophis catenifer)
- Western Ground Snake (Sonora semiannulata)
Rear-fanged Snakes (Dipsadidae)
Harmless Live-bearing Snakes (Natricidae)
- Santa Cruz Garter Snake (Thamnophis atratus)
- Western Terrestrial Garter Snake (Thamnophis elegans)
- Northwestern Garter Snake (Thamnophis ordinoides)
- Common Garter Snake (Thamnophis sirtalis)
Pit Vipers (Crotalidae)