Sonoran Green Toad (Anaxyrus retiformis)

Sonoran Green Toad (Anaxyrus retiformis)
photo by William Flaxington

Common Name: Sonoran Green Toad, Pima Green Toad
Scientific Name: Anaxyrus retiformis
Family: Bufonidae – True Toad Family
Locations: Mexico and the United States
US Locations: Arizona
Size: 1.5 – 2 inches (40 – 49 mm)

The Sonoran Green Toad is known for their yellow / green spots on the dark black background. The toad has lived over 15 years in captivity, which is relatively long for a toad. They are a highly fossorial frog, spending most of their days underground. General habitat for the toad is semi-arid plains, mesquite grass lands, and deserts.

Once the summer rains come, the male Sonoran Green Toad comes to temporary rain filled pools to breed. The males will start to call from grass surrounding the pools to attract females. They are known as explosive breeders due to them only mating for a few days compared to weeks like other frogs. The females will carry the male from the grasses to the water where the females will lay her eggs and the male will fertilize them. The two toads will then part ways and provide no care for the offspring. Females will lay between 5 to 200 eggs. The eggs will hatch into tadpoles in 2 – 3 days. Then, the tadpoles take 2 to 3 weeks to complete their metamorphosis.

Sonoran Green Toad (Anaxyrus retiformis)
photo by William Flaxington

The International Union for the Conservation of Nature (IUCN) Red List assesses the toad as Least Concern for Extinction. They have a wide range and a presumed large population. There aren’t any major threats to them as well.

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