Up until the early 1970's the Wyoming toad inhabited the flood plains of the Laramie rivers and the margins of ponds in the Laramie Basin. Declines in both range and abundance were noted during the mid 1970's. The present known distribution is limited to an area between 10 and 20 miles west of Laramie that extends 20 miles to the north and south. The toads population contains toads from several age classes and exhibits annual reproduction. In May after daytime temperatures reach 70 degrees Fahrenheit adult toads appear at the breeding sites.
Males appear first and attract females with their calls.
Breeding congregations consist of 6 males and a few females. Breeding takes place from mid May to mid June. 2,000 to 5,000 heavily pigmented eggs are deposited in gelatinous strings. Fahrenheit during the night hatched with excellent success. At these temperatures eggs hatched in less than one week.