The Colorado River toad (Incilius alvarius), also known as the Sonoran Desert toad, is a toad species found in northwestern Mexico and the southwestern United States. It is well known for its ability to exude toxins from glands within its skin that have psychoactive properties.

This toad is common in the Sonoran Desert. It occurs in a variety of habitats including creosote bush desertscrub, grasslands up into oak-pine woodlands, and thornscrub and tropical deciduous forest in Mexico.

Jul 26, 2022 · According to the Tucson Herpetological Society, the Sonoran Desert Toad is the largest native toad in the United States. Adults of the specie can reach over eight inches in length, and can weigh...

SONORAN DESERT TOAD Incilius alvarius DESCRIPTION: Arizona’s largest toad, Sonoran Desert toads grow to 7.5 inches or more in length. They resemble frogs in that they have relatively smooth, typically olive-green/brown skin, but they can be identified as toads by the crests on the head (cranial crests), and prominent, elongated glands on both ...

Several Sonoran Desert Toads out at night in Arizona, hopping and running quickly across desert roads. Adults are 4 - 7 1/2 inches from snout to vent (10.1 - 19 cm). (Stebbins, 2003) The largest toad in California before its presumed extirpation.

The Sonoran desert toad (Bufo alvarius), also known as the Colorado river toad, is one of the largest toads found in North America, measuring nearly 7 inches (18 cm). Appearance : Sonoran desert toads have a uniform green to greenish-gray complexion and creamy-white underside.

Aug 12, 2007 · During the summer monsoon season, Sonoran Desert Toads (Bufo alvarius) are common, nocturnal visitors to yards near water or natural, desert vegetation here in the Sonoran Desert. They emerge after the summer rains in order …

Sonoran desert toads, also known as Colorado River toads, are the largest North American toads. They have fairly smooth skin for a toad, with few warts. Skin color is typically greenish-gray with a creamy white underside.

The Sonoran toad is one of the most enormous toads in North America at around seven inches in length. Besides a few white warts around the jaw’s angle and on the hind legs, these toads have relatively smooth skin.

This most infamous toad of the Southwest and has gained an unfortunate notoriety with the discovery of the hallucinogenic properties of its parotoid glands. Reports of humans dying from these properties are erroneous, however pets have become ill.