Gulf Coast Toad

Gulf Coast Toad

Incilius nebulifer

Silhouette: Jose Carlos Arenas-Monroy · PhyloPic

LCLeast ConcernNTVUENCR
Daily sighting probability ~30% · Possible
at San Antonio

In 3 days ~70% in a week ~90%

975 Verified sightings at San Antonio
139 In all 2 parks From 2019 to 2026
August Best month
☀️🌙 Day & Night When it's spotted

About the Gulf Coast Toad

Incilius nebulifer, also known as the coastal plains toad or Gulf coast toad, is a species of toad in the family Bufonidae. It is found on the coast of Gulf of Mexico from Veracruz in Mexico to Mississippi in the United States. It was removed from the synonymy of Incilius valliceps in 2000.

It occurs in a wide range of habitats, both natural and human-altered: coastal prairies, barrier beaches, towns, etc. Breeding takes place in various kinds of pools, including roadside and irrigation ditches. This widespread and common toad is not threatened. Wikipedia →

Sounds

Advertisement call0:44

United States · 2013

© Chris Harrison · XC890468 · CC BY-NC-SA 4.0

Recording0:09

United States · 2024

© Mike Duran · iNaturalist · CC BY 4.0

Recording0:07

United States · 2026

© radunzel · iNaturalist · CC BY-NC 4.0

Global Distribution

Parks Where Found

# Park Country Daily sighting probability
1 Cumbres de Monterrey National Park 🇲🇽 Mexico
~20%
2 Padre Island National Seashore 🇺🇸 United States
~10%

Cities Where Found

# City Country Daily sighting probability
1 Austin 🇺🇸 United States
~40%
2 Houston 🇺🇸 United States
~30%
3 San Antonio 🇺🇸 United States
~30%
4 Dallas 🇺🇸 United States
~30%
5 Monterrey 🇲🇽 México
~20%

Zoos & Centres Where Found

# Zoo / Centre Country
1 Gladys Porter Zoo 🇺🇸 United States In captivity
2 Entopia 🇲🇾 Malaysia In captivity
3 Dallas World Aquarium 🇺🇸 United States In captivity

Before you go

What are the chances of seeing a Gulf Coast Toad in San Antonio?

Possible

About 30% of wildlife watchers report a Gulf Coast Toad sighting in San Antonio on a given day, based on 975 verified sightings from GBIF citizen-science data. It is the most-seen of the 8 amphibians we can rate there. Over three days the chance rises to about 70%, and over a week to about 90%, if each day is a fresh chance.

When is the best time to see a Gulf Coast Toad in San Antonio?

June to September

In those months about 50% of wildlife watchers report a Gulf Coast Toad in San Antonio on a given day, against about 10% in December to February, the lowest months.

What time of day is best to see a Gulf Coast Toad?

Between 8 and 11 pm

Across all the parks we cover, that three-hour window holds the most Gulf Coast Toad sightings with a recorded time, and about 6 in 10 of them come between 6 pm and 6 am: it is seen both by day and at night.

Is San Antonio the best place to see a Gulf Coast Toad?

3rd of 5

Of the 5 cities where we can rate Gulf Coast Toad sightings, San Antonio ranks 3rd at about 30%. The best odds are in Austin (United States, about 40%) and Houston (United States, about 30%).

Which relatives of the Gulf Coast Toad live in San Antonio?

Same order: Anura

The closest relatives of the Gulf Coast Toad that you can see in San Antonio (order Anura, Frogs and Toads) are Rio Grande Leopard Frog (about 10%), American Bullfrog (about 10%) and Green Treefrog (about 10%), with each one's daily chance of a sighting.

Where does the Gulf Coast Toad sighting chance come from?

GBIF citizen-science records

It is estimated from how often the Gulf Coast Toad is recorded against all the amphibians logged in San Antonio (975 verified sightings), calibrated against known sighting rates. Figures are rounded to the nearest 10% because citizen-science data supports honest approximations, not decimals, and months with records from fewer than five people show "—". How it works.

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