Amphibian · GBIF taxon 2422432
Sonoran Desert Toad
Incilius alvariusAlso known as Colorado River Toad
Emerging from subterranean retreats during summer monsoon rains, Sonoran Desert toads are North America's largest native toad. Large parotoid glands behind their eyes secrete powerful defensive toxins capable of deterring most mammalian predators. Females lay long gelatinous strings containing thousands of black eggs in temporary desert pools, where tadpoles rapidly mature before water evaporates.
NocturnalAmphibianDesert
—observations
—countries
—peak records
Least ConcernConservation statusIUCN Red List categoriesLCNTVUENCREWEXLeast ConcernRed List categories, explained →
Diet & prey
- Beetles
- Scorpions
- Small rodents
Predators
- Raccoons
- Coatis
- Garter snakes
ThreatsHabitat loss, road mortality, over-collection, and extreme drought
HabitatsArid deserts, desert scrub, grasslands, and lower mountain canyons
Life span10–20 years
Size / weightNot available
Classification
- FamilyBufonidae
- SpeciesIncilius alvarius
Range data is not available yet.
Interaction riskHigh
- Low
- Moderate
- High
- Very high
- Why interaction risk is high
- Skin secretions are highly toxic to pets and humans; keep dogs away and avoid handling.
- Why it is dangerous
- Secretes potent cardiotoxins and tryptamines from parotoid glands that cause cardiac arrest or seizures if ingested by pets.
- How to recognize a risky encounter
- Recognized by its massive olive-green body, smooth skin, large parotoid glands behind the eyes, and white warts near the jaw.
- What to do
- Do not touch; keep pets leashed on humid summer nights and seek immediate veterinary care if a dog contacts one.
Responsible observation
- Observation: Watch active adults on warm summer nights following monsoon rains.
- Pet Safety: Keep dogs leashed near desert pools to prevent fatal ingestion of toad toxins.
- Handling Precautions: Never handle wild individuals, as secretions cause severe mucosal irritation.
Desert Neighbor Wikimedia Commons / CC BY-SA 2.5 · cc-by-sa
Monsoon Emerger (c) Nick Tobler (Cowturtle), some rights reserved (CC BY), uploaded by Nick Tobler (Cowturtle) · cc-by
Close Relative (c) Bob Miller, some rights reserved (CC BY) · cc-by
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