Top Results for Threatened
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The California red-legged frog (Rana draytonii) is a moderate to large amphibian endemic to California and Baja California, recognized as the largest native frog in the western United States. It inhabits ponds, marshes, and streams, relying on dense vegetation for cover. Due to habitat loss, water p...
Why this score
Largest western native frog, Mark Twain association, and federal threatened status give strong cultural and conservation profile.
Scoring methodologyThe Steller’s Eider is a sea-duck native to the Arctic regions of Russia and Alaska. It’s notable for its small size among eiders and possesses distinctive black and white plumage on males. This species faces threats due to habitat loss and population declines. Researchers, conservationists, and bir...
The Spectacled Eider is a sea duck found in Arctic regions, particularly coastal Alaska. Its distinctive pale green eye patches are unique among eiders and make it easily identifiable. This species faces significant threats due to habitat loss and population decline. Scientists and researchers study...
The Red Hills Salamander (Phaeognathus hubrichti) is a large, terrestrial lungless salamander in the family Plethodontidae. It is strictly endemic to the Red Hills region of south-central Alabama, where it inhabits steep, moist, shaded slopes dominated by hardwood trees. The species is classified as...
Why this score
Largest plethodontid, federally threatened, and taxonomically unique; strong expert reputation despite secretive habits.
Scoring methodologyThe Vietnamese crocodile newt (Tylototriton vietnamensis) is a species of salamander in the family Salamandridae, first scientifically identified in 2005 and endemic to the subtropical forests of northern Vietnam. The amphibian features a predominantly black body covered in prominent, rough rib nodu...
Why this score
Critically endangered crocodile newt with striking morphology and strong conservation appeal; duplicate identity with Vietnamese salamander.
Scoring methodologyThe marbled teal (Marmaronetta angustirostris) is a medium-sized dabbling duck and the sole extant member of its genus, Marmaronetta. Native to the Mediterranean basin and parts of southwestern and central Asia, it prefers shallow, brackish wetlands with extensive emergent vegetation. The species di...
Why this score
Beautifully patterned, globally threatened teal receives strong conservation attention; subdued coloration and population decline limit best-in-class status.
Scoring methodologyThe Jollyville Plateau Salamander (Eurycea tonkawae) is a federally threatened, permanently aquatic amphibian belonging to the family Plethodontidae. It is endemic to the karst geology of the Jollyville Plateau in Travis County, Texas, where it strictly inhabits spring-fed streams and subterranean c...
Why this score
Threatened Texas karst salamander with major urban conservation profile, though visually understated.
Scoring methodologyThe Georgetown Salamander (Eurycea naufragia) is a federally threatened, permanently aquatic amphibian belonging to the family Plethodontidae. It is known only from a small number of limestone springs located in Williamson County, Texas, near the city of Georgetown. Like other lungless salamanders,...
Why this score
Narrow endemic spring salamander with strong conservation attention, but limited public familiarity.
Scoring methodologyThe Northern Red-legged Frog (Rana aurora) is a medium-sized amphibian native to the Pacific Northwest region of North America. Its range extends from southwestern British Columbia in Canada down through Washington, Oregon, and into northern California. This species is typically found in humid fores...
Why this score
Recognizable Pacific Coast frog with attractive coloration; solid conservation and field guide reputation.
Scoring methodologyThe Salado salamander (Eurycea chisholmensis) is a small, aquatic, neotenic salamander belonging to the family Plethodontidae. It possesses a highly restricted geographic range, being entirely endemic to the spring outflows and subterranean waters of the Salado Creek system in Bell County, Texas. Du...
Why this score
Rare Texas spring endemic with conservation interest, though less recognized than Austin or Barton-area salamanders.
Scoring methodologyThe Riverside fairy shrimp, scientifically known as Streptocephalus woottoni, is a small freshwater crustacean native to Southern California. This endangered species is found in temporary vernal pools located primarily in San Diego, Riverside, and Orange counties. As a branchiopod, it relies on thes...
Why this score
Federally endangered vernal-pool fairy shrimp, strong conservation significance, geographically restricted and little popular profile.
Scoring methodologyThe Yosemite toad (Anaxyrus canorus) is a species of true toad endemic to the high-elevation wetlands of California's Sierra Nevada mountains, typically found above 6,000 feet. The species exhibits sexual dimorphism, with females displaying black and cream spots, while males generally have a uniform...
Why this score
High-elevation endemism and threatened status add importance; modest mainstream awareness.
Scoring methodologyThe Foothill Yellow-legged Frog (Rana boylii) is a medium-sized frog native to the streams and rivers of California and Oregon. It relies heavily on intact riparian ecosystems, requiring shallow, flowing water and cobblestone streambeds to attach its egg masses securely. The species has experienced...
Why this score
Stream specialization and conservation concern matter, though visual and public distinctiveness are moderate.
Scoring methodologyThe Tulear Reef, located near the city of Toliara in southwestern Madagascar, is an extensive coral reef system in the western Indian Ocean. It consists of barrier and fringing reefs that have been the subject of significant scientific research due to their high marine biodiversity. The reef ecosyst...
Why this score
Scientifically important and historically rich reef, but heavy sedimentation, fishing, and climate stress make quality reputation uneven.
Scoring methodologyThe Spotted Owl (Strix occidentalis) is a medium-sized owl native to mature forests of western North America. It is divided into three recognized subspecies associated with the Pacific Northwest, the Sierra Nevada, and the canyonlands of the Southwest. Its reliance on structurally complex old-growth...
Branchinecta lynchi, the vernal pool fairy shrimp, is a small freshwater crustacean in the order Anostraca endemic to California and southern Oregon. The species inhabits seasonal vernal pools—temporary wetlands that fill with rainwater in winter and dry completely by summer—and its life cycle is ad...
Jefferson Salamander (Ambystoma jeffersonianum), named for Jefferson College in Pennsylvania, is a mole salamander that serves as a parent species in several unisexual all-female Ambystoma hybrid lineages.
Why this score
Hybrid-complex importance and conservation concern add interest, but public recognition is low.
Scoring methodologyThe striped newt, Notophthalmus perstriatus, is a small salamander native to the southeastern United States and restricted principally to parts of Florida and Georgia. It inhabits upland longleaf-pine and sandhill landscapes and depends on temporary, fish-free wetlands for breeding. Adults are marke...
Why this score
Rare sandhill endemic with conservation value, but limited broad recognition.
Scoring methodologyLonghorn fairy shrimp, Branchinecta longiantenna, is a rare freshwater crustacean found in seasonal vernal pools in California. Its name refers to the species' unusually elongated antennae, which are part of the sensory anatomy used in its aquatic environment. Because its habitat is temporary and vu...
Why this score
Specialized fairy shrimp with notable antennae, ecological interest, low public recognition and limited hobby presence.
Scoring methodologyThe American black duck is a large dabbling duck of eastern North America. It is closely related to the Mallard and can interbreed with it, producing hybrids in areas where the two species occur together. The species uses a range of wetland habitats, including freshwater marshes, wooded swamps, tida...
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Frequently Asked Questions
What leads the Threatened ranking?
California Red-legged Frog currently leads the Threatened results with a displayed score of 8.73/10. This is an editorial ranking result for the items included on this page, not a universal verdict for every use case.
How should I read the score and confidence label?
The 0 to 10 score is Lunoo's ranking judgment. Strong confidence means 10 or more recorded comparison checks, some means 2 to 9, and provisional means fewer than 2.
What supports this ranking?
Lunoo combines category fit, feature coverage, pricing and value signals, public reception, recency, and peer comparisons. Public source links support factual item details when available, but they are not required for membership in this 20-item ranking.
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Yes. The comparison links put adjacent leaders side by side so you can inspect differences that one ranking score cannot capture.