Western (Boreal) Toad (Anaxyrus boreas)

Other names: Western Toad, Boreal Toad, Anaxyrus boreas boreas, Bufo boreas boreas


  • Size: ~3/4 inch (metamorph) to ~4.5 inches (adult)
  • Dorsal color: light olive to dark brown
  • Dark raised warts
  • White dorsal stripe
  • Ventral color: white with black spots
  • No cranial crest
  • Mp3 of call (courtesy of Gary Nafis, californiaherps.com; contact Gary for permission to post on other websites)

Photo by Weinmann


Eggs & Tadpoles

  • Egg strings with lots of jelly, usually wrapped around vegetation
  • Tadpole eyes are medial
  • Uniformly dark black tadpoles with anal vent on midline

BorealToad_tadpoles2_Ochsenfeld-400px.jpg       Photo by Ochsenfeld


Breeding Habitat

Shallow water in ponds, flooded meadows, and slow or moving pooled water on the edge of streams.


Photo by Wendy Estes-Zumpf


Native Range


Map by Wyoming Natural Diversity Database