Western Narrow-mouthed Toad
Gastrophryne olivacea
Silhouette: Dmitry Bogdanov (vectorized by T. Michael Keesey) · PhyloPic
- KingdomAnimalia (Animals)
- PhylumChordata (Chordates)
- ClassAmphibia (Amphibians)
- OrderAnura (Frogs and Toads)
- FamilyMicrohylidae (Narrow-mouthed Frogs)
- GenusGastrophryne (North American Narrow-mouthed Toads)
- SpeciesGastrophryne olivacea (Western Narrow-mouthed Toad)
About the Western Narrow-mouthed Toad
Gastrophryne olivacea, the Great Plains narrow-mouthed toad or western narrow-mouthed toad, is a species of microhylid frog found throughout much of the south-central United States from Nebraska south through Texas, and into northern Mexico. Though not a true toad, evidenced by the smooth, moist skin, its common name is due to its terrestrial habit.
Great Plains narrow-mouthed toads are a small (19-42 mm snout to vent), fossorial, flat-bodied species, with a sharply pointed snout. They are typically olive green to grey-brown in color, sometimes with black blotching. Their undersides are lighter colored. Their skin secretions can cause severe, burning pain if they get into the eyes.
This toad is found in a wide range of habitats, but most frequently on moist ground or in leaf litter, and under rocks or fallen logs. They breed throughout the spring and summer in pools of water left by rainfall. They have been found to hybridize with Gastrophyrne carolinensis. Their primary diet is ants.
Western narrow-mouthed toads have a mutualistic relationship with tarantulas. They will live together, and in exchange will eat ants that attempt to invade... Wikipedia →
Recent sightings of Western Narrow-mouthed Toad in Big Bend National Park
LIVEiNaturalistClosest Relatives at Big Bend National Park
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Anaxyrus punctatus
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Lithobates berlandieri
Texas Toad
Anaxyrus speciosus
Couch's Spadefoot
Scaphiopus couchii
Canyon Tree Frog
Dryophytes arenicolor
American Bullfrog
Lithobates catesbeianus
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Dryophytes cinereus
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Anaxyrus debilis
Cliff Chirping Frog
Eleutherodactylus marnockii
Mexican Spadefoot
Spea multiplicata
Global Distribution
Warmer areas are where this animal is recorded most often.
Parks Where Found
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Big Bend National Park | 🇺🇸 United States |
More parks will be added in future updates.
Quick answers
What are the chances of seeing a Western Narrow-mouthed Toad in Big Bend National Park?
About 10% of wildlife watchers report a Western Narrow-mouthed Toad sighting in Big Bend National Park, based on 11 verified sightings from GBIF citizen-science data.
When is the best time to see Western Narrow-mouthed Toad in Big Bend National Park?
June has the highest sighting rate for Western Narrow-mouthed Toad in Big Bend National Park in our monthly data.