Oregon is home to 31 amphibian species and 29 species of reptiles.

Amphibians

Tiger salamander The tiger salamander (Ambystoma tigrinum) is a species of mole salamander. Tiger salamanders are large, with a typical length of 6–8 inches. They can reach up to 14 inches in length, particularly neotenic individuals. Adults are usually blotchy with grey, green, or black, and have large, lidded eyes. They have short snouts, thick necks, sturdy legs, and long tails. Their diet consists largely of small insects and worms, though it is not rare for an adult to consume small frogs and baby mice.

Northwestern salamander The northwestern salamander (Ambystoma gracile) inhabits the northwest Pacific coast of North America. These fairly large salamanders grow to in length. It is found from southeastern Alaska on May Island, through Washington and Oregon south to the mouth of the Gulala River, Sonoma County, California. It occurs from sea level to timberline, but not east of the Cascade Divide. Its range includes Vancouver Island in British Columbia and Cypress, Whidbey, Bainbridge, and Vashon Islands in Washington (Snyder 1963).

Long-toed salamander The long-toed salamander (Ambystoma macrodactylum, Baird 1849)Originally described as Ambystoma macrodactyla. is a mole salamander in the family Ambystomatidae. This species, typically 4.1–8.9 cm (– in) long when mature, is characterized by its mottled black, brown and yellow pigmentation, and its long outer fourth toe on the hind limbs. Analysis of fossil records, genetics, and biogeography suggest that A. macrodactylum and A. laterale are descended from a common ancestor that gained access to the western Cordillera with the loss of the mid-continental seaway toward the Paleocene. The distribution of the long-toed salamander is primarily in the Pacific Northwest, with an altitudinal range of up to . It lives in a variety of habitats including temperate rainforests, coniferous forests, montane riparian zones, sagebrush plains, red fir forests, semi-arid sagebrush, cheatgrass plains, and alpine meadows along the rocky shores of mountain lakes. It lives in slow-moving streams, ponds and lakes during its aquatic breeding phase. The long-toed salamander hibernates during the cold winter months, surviving on protein energy reserves stored in the skin and tail.

Cope's giant salamander The Cope's giant salamander (Dicamptodon copei) is a species of salamander in the family Dicamptodontidae.John L. Behler and F. Wayne King. 1979 It reaches between 12.4–19.1 cm ( – in). The salamander resembles Pacific giant salamander larvae, but it never transforms to a terrestrial stage. It is smaller overall with a narrower head and shorter limbs. It is brown above with patches of yellowish-tan covering clusters of white skin glands, its belly is dark bluish-gray. The salamander has 12–13 inconspicuous costal grooves. There are three closely related species to this taxon: D. ensatus (California giant salamander), D. aterrimus (Idaho giant salamander) and D. tenebrosus (coastal giant salamander).C. Michael Hogan. 2008 D. copei is endemic to the Pacific Northwestern portion of the United States. It is found on the Olympic Peninsula, Washington. Its natural habitat is temperate forests, rivers, freshwater lakes, and freshwater marshes.

Coastal giant salamander The coastal giant salamander (Dicamptodon tenebrosus) is a species of salamander in the family Dicamptodontidae (Pacific giant salamanders). It is endemic to the United States and Canada. There are three closely related species to this taxon: D. ensatus (California giant salamander), D. copei (Cope's giant salamander), and D. aterrimus (Idaho giant salamander). Its natural habitats are temperate forests, rivers, freshwater lakes, and freshwater marshes. The coastal giant salamander is endemic to the Pacific Northwest, found in Northern California, Oregon, Washington, and southern British Columbia.

Columbia torrent salamander The Columbia torrent salamander (Rhyacotriton kezeri) is a species of salamander in the family Rhyacotritonidae. It is endemic to the United States. Its natural habitats are temperate forests, rivers, and freshwater springs. It is a small salamander (up to 10 cm total length) that lives in clear, cold mountain streams.

Southern torrent salamander The southern torrent salamander (Rhyacotriton variegatus) is a member of the salamander family Rhyacotritonidae. It is a small salamander endemic to the Pacific Northwest from Northern California to Southern Oregon; its distribution reaches the farthest south of the torrent salamanders. They are one of four species of Rhyacotriton, along with R. cascadae, R. kezeri and R. olympicus. All species of Rhyacotriton are small with their body length being less than 5 inches. The family Rhyacotritonidae is found only in the Pacific Northwest, extending from Northern California to the Washington Peninsula.

Cascade torrent salamander The Cascade torrent salamander (Rhyacotriton cascadae) is a species of salamander in the family Rhyacotritonidae. It is endemic to the United States. Its natural habitats are temperate forests, rivers, and freshwater springs.

Rough-skinned newt The rough-skinned newt (Taricha granulosa) is a newt known for its strong poison. Habitats of rough-skinned newts are found throughout the West Coast of the United States and British Columbia. Their range extends south to Santa Cruz, California and north to Alaska.

Dunn's salamander The Dunn's salamander (Plethodon dunni) is a species of salamander in the family Plethodontidae. It is endemic to the United States. Its natural habitats are temperate forests, freshwater springs, and rocky areas. It has no larval stage. Its diet consists mainly of small invertebrates.

Larch Mountain salamander The Larch Mountain salamander (Plethodon larselli) is a species of salamander in the family Plethodontidae. It is endemic to the United States. The Larch Mountain salamander occurs in the Cascade Mountains of southern Washington and northern Oregon. In Washington, it occurs from the Columbia River Gorge to just north of Snoqualmie Pass. Its natural habitats are temperate forests and rocky areas.

Western red-backed salamander The Western redback salamander (Plethodon vehiculum) is a species of salamander in the family Plethodontidae. Its natural habitats are temperate forests and rocky areas. Colored stripe on the back range from red to yellow.

Del Norte salamander The Del Norte salamander (Plethodon elongatus) is a species of salamander in the family Plethodontidae. It is endemic to the United States. Adults are - 3 inches long (6 - 7.6 cm) from snout to vent, and - 6 inches (11 – 15 cm) in total length. Its natural habitats are temperate forests and rocky areas.

Siskiyou Mountains salamander The Siskiyou Mountains salamander (Plethodon stormi),Sherman C. Bishop and Edmund D. Brodie, Jr., 1994 also called the Siskiyou Mountain salamander, exists only in isolated locations along the Klamath River in northern California and southern Oregon. It is a close relative of the Del Norte salamander, and some herpetologists believe it may be a subspecies of the latter.

Ensatina Ensatina eschscholtzii (commonly known by its genus name, Ensatina) is a complex of plethodontid (lungless) salamanders.Wake, D. (1997) Incipient species formation in salamanders of the Ensatina complex Proceedings of the National Academy of Sciences USA 94:7761-7767 found in coniferous forests, oak woodland and chaparralMonterey Ensatina San Diego Field Station, United States Geological Survey Viewed: April 24, 2005, Last updated: March 5, 2003 from British Columbia, through Washington, Oregon, across California (where all seven subspecies variations are located), all the way down to Baja California in Mexico.

Clouded salamander The clouded salamander (Aneides ferreus) is a species of salamander in the family Plethodontidae. It is endemic to the United States. Its natural habitat is temperate forests and it is probable that many nest in trees.

Black salamander The black salamander (Aneides flavipunctatus) is a species of salamander in the family Plethodontidae. It is endemic to the United States. Its natural habitats are temperate forests and temperate grassland.

Oregon slender salamander The Oregon slender salamander (Batrachoseps wrightorum) is a species of salamander in the family Plethodontidae. The Oregon slender salamander is endemic to the Northwestern United States.. icun: B. wrightorum . Retrieved February 12, 2010 Its natural habitat is temperate forests of moist Douglas fir, maple, and red cedar woodlands in Oregon, to .

California slender salamander The California slender salamander (Batrachoseps attenuatus) is a lungless salamanderStebbins, Robert C., A Field Guide to Western Reptiles and Amphibians, 3rd Edition. Houghton Mifflin Company, 2003 that is found primarily in coastal mountain areas of Northern California, United States as well as in a limited part of the western foothills of the Sierra Nevada, California, in patches of the northern Central Valley of California, and in extreme southwestern Oregon.

Coastal tailed frog The coastal tailed frog (Ascaphus truei) is a species of frog in the genus Ascaphus, the only genus in the family Ascaphidae . The "tail" in the name is actually an extension of the male cloaca. The tail is one of two distinctive anatomical features adapting the species to life in fast-flowing streams. It is the only North American frog that reproduces by internal fertilization. Until 2001, the genus was believed to be monotypic, the single species being the tailed frog (Ascaphus truei Stejneger, 1899). However, in that year Nielson, Lohman, and Sullivan published evidence in Evolution that promoted the Rocky Mountain tailed frog (Ascaphus montanus) from a subspecies to its own species. Since then, the former species has been formally called coastal tailed frog.

Pacific tree frog The Pacific tree frog (Pseudacris regilla) is a very common species of chorus frog, with a range from the West Coast of the United States (from North California, Oregon, and Washington) to British Columbia in Canada. Living anywhere from sea level up to over 10,000 feet, they are found in shades of greens or browns and even have been known to change between them. They live in many types of habitats and reproduce in aquatic settings. This species is also known as the Pacific chorus frog.

Great Basin spadefoot toad The Great Basin spadefoot (Spea intermontana) is a species of toad in the family Scaphiopodidae. The natural habitats of the Great Basin spadefoot include pinyon-juniper, ponderosa pine, and high elevation spruce-fir forests, semidesert shrubland, sagebrush flats, temperate grasslands, and deserts. They are present in agricultural areas as well. The Great Basin spadefoot can be found from southern British Columbia through the eastern portions of Washington and Oregon and in southern Idaho. Their range extends throughout all of Nevada and into most of Utah; they are also present in small areas in California, Arizona, Colorado, and Wyoming.

Western toad The western toad or boreal toad (Anaxyrus boreas) is a large toad species, between 5.6 and 13 cm long, of western North America. It has a white or cream dorsal stripe, and is dusky gray or greenish dorsally with skin glands concentrated within the dark blotches.

Woodhouse's toad The Woodhouse's toad (Anaxyrus woodhousii) is a medium-sized () true toad, which is native to the United States and Mexico. There are two recognized subspecies. The epithet woodhousii is in honor of the American physician and naturalist Samuel Washington Woodhouse. B. woodhousii tends to hybridize with Bufo americanus in their overlapping ranges.

American bullfrog