This is a list of species of fauna (animals) that have been observed in the U.S. state of Oregon.
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The western lyre snake is a mildly venomous colubrid snake native to Mexico and Guatemala.
Dryophytes eximius, commonly known as the mountain tree frog, is a species of frog in the family Hylidae endemic to Mexico. Its natural habitats are mesquite grasslands, scrub forests, and pine-oak forests. It is a widely distributed species that faces no major threats.
Wright's mountain tree frog is a species of frog in the family Hylidae found in Mexico and the United States. Its natural habitats are temperate forests, temperate grassland, rivers, and freshwater marshes. Dryophytes wrightorum has been regarded as a synonym of Dryophytes eximius, the mountain tree frog, which is listed as the state amphibian of Arizona. As presently circumscribed, Dryophytes eximius is endemic to Mexico and does not occur in Arizona. It is the state amphibian of Arizona.
The Gabilan Mountains slender salamander is a species of salamander in the family Plethodontidae. It is endemic to California in the United States, where it is distributed along the Central Coast region from Santa Cruz to northern Kern County.
The Pacific shrew is a species of mammal in the family Soricidae. It is endemic to western Oregon in the United States. The Pacific Shrew is native to western Oregon, more specifically from the Siltcoos lake to the coast going from the border line of Douglas and Lane counties continuing south to the northern parts of California. The first documented Pacific shrew to be caught was found at the mouth of the Umpqua River in 1858. They are normally found in damp areas along creeks in forests and sometimes near collapsed trees. Their refuge is of the utmost importance and they are seldom found far from it. This includes collapsed trees or dense vegetation. They use the flora to build a nest, gathering small plants such as grass, moss, lichen, or leaves into a pile and pushing themselves into the middle.
Spiralothelphusa is a genus of freshwater crabs in the family Gecarcinucidae. It contains these species, all of which are included on the IUCN Red List:
Stylurus is a genus of dragonflies in the family Gomphidae. They are commonly known as hanging clubtails from their habit of hanging nearly vertically when they perch.
The black banded gecko is a gecko endemic to western Mexico. It is found in Madrean foothills in Sinaloa and southern Sonora, and perhaps in extreme adjacent southwestern Chihuahua.
Holbrookia elegans, the elegant earless lizard, is a species of lizard native to the United States and Mexico.
The Sonoran leaf-toed gecko is a species of gecko. It is endemic to Mexico.
The Sonoran spotted whiptail is a parthenogenic species of teiid lizard found in Arizona and New Mexico in the United States, and Mexico.
The plateau striped whiptail is a species of teiid lizard found in Utah, Colorado, Arizona, and New Mexico in the United States. It has been introduced to the State of Oregon
Plestiodon parvulus, the southern pygmy skink, is a species of lizard which is endemic to Mexico.
Sceloporus bulleri, Buller's spiny lizard, is a species of lizard in the family Phrynosomatidae. It is endemic to Mexico.
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