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


  • 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,; contact Gary for permission to post on other websites)


Sketch by Wyoming Game and Fish Department; Photo by Bateson


Eggs & TadpolesWoodhousesToad_eggs_WYNDD-400px.jpg

  • 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