Photo of Oak Toad, Bufo quercicus

USGS U.S. Geological Survey/photo
Oak Toad, Bufo quercicus 
The Oak Toad, Bufo quercicus, is the smallest toad native to the United States. As adults, they reach a maximum size of less than 1 ½ inches. The Oak Toad is native to the Southeastern United States. Being smaller in size makes identifying the Oak Toad easier than other species. Another feature used to help identify them is the stripe that runs down the center of their back. The stripe can be yellow, white, or beige, with some even being more orange.
Oak toad, Anaxyrus quercicus
Photo: U.S. Geological Survey
Site: National Wetlands Research Center