• Saguaro Blooms Upclose

    Saguaro

    National Park Arizona

There are park alerts in effect.
hide Alerts »
  • Tucson Mountain District Roads and Visitor Center have Reopened

    The Red Hills Visitor Center and all interior roads in the Tucson Mountain District (west) have reopened after the passing of Tropical Storm Odile. More »

Sonoran Desert Toad

Sonoran Desert toad

NPS photo

Sonoran Desert Toad (Bufo alvarius)

The Sonoran Desert toad, previously known as the Colorado River toad, is one of the largest toads native to North America. They have relatively smooth olive-green skin with huge parotoid glands behind each eye and several large warts on their hind legs. When disturbed, the parotoid glands secrete toxins as a defense. Dogs that mouth the toads can become temporarily paralyzed and sometimes die if not treated immediately.

Length: 4 - 7 ½ in. (10.1 - 19 cm)

Diet: Mostly insects, but also mice and other toads

Did You Know?

Fire

Buffelgrass burns at 1300-1600 F, hot enough to melt aluminum and the fire can travel near the speed of the wind. Even in moderate weather, it can travel at 2-3 mph with 12-18 ft flame lengths, making it a real threat to the lives of firefighters