Western Narrow-mouthed Toad
Gastrophryne olivacea
- KingdomAnimalia (Animals)
- PhylumChordata (Cordats)
- ClassAmphibia (Amfibis)
- OrderAnura (Anurs)
- FamilyMicrohylidae (Narrow-mouthed Frogs)
- GenusGastrophryne (North American Narrow-mouthed Toads)
- SpeciesGastrophryne olivacea (Western Narrow-mouthed Toad)
Closest Relatives at Big Bend National Park
Red-spotted Toad
Anaxyrus punctatus
Rio Grande Leopard Frog
Lithobates berlandieri
Texas Toad
Anaxyrus speciosus
Couch's Spadefoot
Scaphiopus couchii
Canyon Tree Frog
Dryophytes arenicolor
American Bullfrog
Lithobates catesbeianus
Green Treefrog
Dryophytes cinereus
Green Toad
Anaxyrus debilis
Cliff Chirping Frog
Eleutherodactylus marnockii
Mexican Spadefoot
Spea multiplicata
📅 Monthly Probability
🌙 When They're Spotted
Most active during nighttime hours (6pm–6am) · across all parks (global)
Global Distribution
Where this species is recorded worldwide. Restricted to human observations from 2019 onwards — the same kind of record and the same period the probabilities on this page are built from, so collar-tracking studies, camera-trap arrays and museum specimens are excluded. Around Santa Rosa that removes 5,924 GPS fixes from a handful of tagged jaguars.
where this species is recorded (GBIF density — it tracks where observers go, not how likely a sighting is) · parks where it occurs — tap a pin for the sighting probability there
Parks Where Found
| # | Park | Country | Probability |
|---|---|---|---|
| 1 | Big Bend National Park | 🇺🇸 United States | |
| 2 | Cumbres de Monterrey National Park | 🇲🇽 Mexico |
Quick answers
What are the chances of seeing a Western Narrow-mouthed Toad in Big Bend National Park?
About 7% of visitor-days record a Western Narrow-mouthed Toad sighting in Big Bend National Park, based on 8 observer-days of citizen-science data from GBIF.
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.