Great Plains Toad (Anaxyrus cognatus)

IdentificationGreatPlainsToad_WYNDD-400px.jpg

  • Size: ~3/4 iinch (metamorph) to ~5 inches (adult)
  • Dorsal color: tan to brown or olive
  • Oftentimes symmetrical large greenish-black blotches surrounded by pale rings
  • Dorsum covered with small warts
  • Ventral color: cream or white with no spots
  • V-shaped cranial crests that join to form a lump (boss) above the snout (may be absent or weak in juveniles; see below for an image)GreatPlainsToad_CranialCrest-WGFD.png
  • Mp3 of call (courtesy of Gary Nafis, californiaherps.com; contact Gary for permission to post on other websites)

Photo by Wyoming Natural Diversity Database; Sketch by Wyoming Game and Fish Department


Eggs & Tadpoles

  • Eggs in strings; outer jelly of string is scalloped, making eggs look like beads on a string
  • Uniformly dark black tadpoles with anal vent on midline
  • Tadpole eyes are medial

 

Breeding Habitat

Lower elevation temporary pools, ponds and potholes, but occasionally permanent ponds and backwater or pooled areas of streams.

AmphibianHabitat_WYNDD-700px.jpg

Photo by Wyoming Natural Diversity Database

 

Native Range

GreatPlainsToad.jpg

Map by Wyoming Natural Diversity Database