Species:

Anaxyrus americanus

American Toad

Notes on this species:
The genus Anaxyrus was split from Bufo by Frost et al in 2006. Most references still use the long-established Bufo.
Subspecies I've seen:
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Dwarf American Toad
A. a. charlesmithi
Subspecies:

Anaxyrus americanus charlesmithi

Dwarf American Toad

Sighting:
May 10, 2004
Meriwether Lewis Site, Lewis County, Tennessee
Dwarf American Toad (Anaxyrus americanus charlesmithi)
This zaftig little toad was hopping about in the leaf litter following an afternoon shower, not fifty yards from where Meriwether Lewis met his fate in 1809.
Sighting:
April 23, 2008
Snake Road, La Rue-Pine Hills Ecological Area, Union County, Illinois
Dwarf American Toad (Anaxyrus americanus charlesmithi)
This was one of numerous frogs and toads enjoying the floodwaters covering part of Snake Road.