Western Toad

The Western Toad is a large toad with warty skin. The skin can be grey, dark green, or brown with a light or cream-colored stripe along the back. There is often darker mottling on the back and the belly is pale with dark splotches.
SCIENTIFIC NAME
Anaxyrus boreas
CLASSIFICATION
Amphibian
LIFE SPAN
3-9 Years
STATE CONSERVATION STATUS
  • Priority Species
FEDERAL CONSERVATION STATUS
Least Concern
GAME STATUS
Non-Game
  1. Washoe
  2. Humboldt
  3. Pershing
  4. Churchill
  5. Mineral
  6. Lyon
  7. Douglas
  8. Carson City
  9. Storey
  1. Elko
  2. Lander
  3. Eureka
  4. White Pine
  1. Esmeralda
  2. Nye
  3. Lincoln
  4. Clark

Habitat & Range

The Western Toad uses many different types of habitats. They are found in most of Nevada, except for the very southern part of the state.

  • Grasslands
  • Marsh
  • Springs and springbrooks

Threats

  • Disease
  • Habitat Loss
  • Invasive Species

Natural History

These toads utilize burrows by digging their own or using abandoned burrows of small mammals. The eggs and tadpoles develop in shallow areas of ponds, lakes, reservoirs, or in pools of slow-moving streams. Females will lay around 5,000 eggs in long strands. In cold water, the eggs will take longer to hatch, but in typical conditions, they will hatch in about a week. Tadpole development is also temperature dependent making them develop faster in warmer waters. Typically tadpoles will leave the water in 1 – 3 months. These toads use their sticky tongues to catch their prey including spiders, worms, moths, beetles, and ants. To defend themselves, the Western Toad can secret a foul-tasting toxin from their parotoid glands, however, some ravens have learned to avoid the areas that contain this toxin. Common predators include fish, birds, and snakes.

Fun Facts

Fresh toad eggs contain some of the toad’s toxins which are also produced in the parotoid gland. This toxin helps protect the eggs from predators, but the potency decreases over time.