Rocky Mountain (Woodhouse’s) Toad

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  • Wyoming’s Amphibians 

    • Northern Leopard Frog (Lithobates pipiens)

    • Wood Frog (Lithobates sylvaticus)

    • Columbia Spotted Frog (Rana luteiventris)

    • Boreal Chorus Frog (Pseudacris maculata)

    • American Bullfrog (Lithobates catesbeianus)

    • Wyoming Toad (Anaxyrus baxteri)

    • Western (Boreal) Toad (Anaxyrus boreas)

    • Rocky Mountain (Woodhouse’s) Toad (Anaxyrus woodhousii)

    • Great Plains Toad (Anaxyrus cognatus)

    • Plains Spadefoot (Spea bombifrons)

    • Great Basin Spadefoot (Spea intermontana)

    • Western Tiger Salamander (Ambystoma mavortium)

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IDENTIFICATION

• Size: ~3/4 inch (metamorph) to ~4.5 inches (adult)
• Dorsal color: mottled tan or gray to dark brown or olive
• Irregular dark spots and many warts
• White dorsal stripe
• Ventral color: cream, occasionally with black spots
• L-shaped cranial crests (may be absent or weak in juveniles)
• Mp3 of call (courtesy of Gary Nafis, californiaherps.com; contact Gary for permission to post on other websites)

Sketch by Wyoming Game and Fish Department; Photo by Bateson

 

EGGS & TADPOLES

• Eggs in strings up to 10 feet long
• Dark tadpoles with gold flecking
• Tadpole eyes medial; anal vent on midline

Egg photo by Wyoming Natural Diversity Database

 

BREEDING HABITAT

Lower elevation ponds, reservoirs, lakes and backwater areas of streams and rivers.

Photo by Hamilton

 

NATIVE RANGE

Map by Wyoming Natural Diversity Database