Consider, if you will, the American bullfrog. “In the Eastern U.S., where it’s native, its oversized impact is a good thing.

The American bullfrog and brown tree snake have collectively caused $16.3bn (£13.4bn) in global damage since 1986. In addition to ecological harm, the invasive pair have ruined farm crops and ...

Blue bullfrogs are rare. In 2020, one was spotted in Indiana and another in Ohio . These blue frogs have a genetic mutation ...