Which species has not been introduced into the USA?

Question

Quizplus · Accepted Answer

Grizzly bears are native to North America, including the United States, and have not been introduced to the country. The other options have been introduced to some extent, such as kudzu which was introduced for erosion control and cattle which were brought over by European colonizers. Argentine fire ants and Burmese pythons are both invasive species that have caused damage to the ecosystems they've been introduced to.

Which Species Has Not Been Introduced into the USA