Relict Leopard Frog
Lithobates onca
Silhouette: Jose Carlos Arenas-Monroy · PhyloPic
- KingdomAnimalia (Animals)
- PhylumChordata (Chordates)
- ClassAmphibia (Amphibians)
- OrderAnura (Frogs and Toads)
- FamilyRanidae (Typical Frogs)
- GenusLithobates (American Water Frogs)
- SpeciesLithobates onca (Relict Leopard Frog)
About the Relict Leopard Frog
The relict leopard frog (Lithobates onca, formerly Rana onca) is a species of frog in the family Ranidae, endemic to the United States. The vocalizations of the relict leopard frog have been described as a "low rumbling 'snore'." Individuals measure 4.4–8.4 cm (1.7–3.3 in), and have a narrow, brown-colored body with darker spots and a beige-colored streak on the upper lip. Relict leopard frogs are most nocturnal.
Its historic range is along the Colorado River in extreme northwestern Arizona, and adjacent Nevada and southwestern Utah, although true to its name, its present range seems to be restricted to the Lake Mead National Recreation Area in Nevada, rendering it extirpated in Arizona and Utah. Its natural habitat is freshwater springs and their outlets.
In the mid-20th century, the relict leopard frog was declared to be extinct. The species was rediscovered in the 1990s in the Virgin River and Muddy River watersheds in Nevada. It is threatened by habitat loss to agriculture and water development as well as invasive species.
Rana onca recordings Wikipedia →
Recent sightings of Relict Leopard Frog in Grand Canyon National Park
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Global Distribution
Warmer areas are where this animal is recorded most often.
Parks Where Found
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Grand Canyon National Park | 🇺🇸 United States |
More parks will be added in future updates.
Quick answers
What are the chances of seeing a Relict Leopard Frog in Grand Canyon National Park?
About 10% of wildlife watchers report a Relict Leopard Frog sighting in Grand Canyon National Park, based on 5 verified sightings from GBIF citizen-science data.
When is the best time to see Relict Leopard Frog in Grand Canyon National Park?
February has the highest sighting rate for Relict Leopard Frog in Grand Canyon National Park in our monthly data.