Species that are considered high risk have a well-documented history of invasiveness in at least one location globally, and a high or medium climate match to the contiguous United States.
Lithobates catesbeianus, a frog native to eastern North America, has become established across the United States and in many other countries as well via intentional and accidental introductions. Numerous authors have described the effects of L. catesbeianus on novel ecosystems; these include outcompeting or preying on native species, altering nutrient cycling, and spreading disease. Nearly all locations in the contiguous U.S. provide suitable climate for this species. Overall risk posed by this species is high.
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High Risk
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