News Animals

American bullfrogs may be threatening a rare frog species in Brazil

Signs of bullfrog DNA in the environment uncovered the previously hidden threat

An American bullfrog peeks out of the water

The invasive American bullfrog (one shown) might be living not far from a critically endangered species of frog, Pithecopus rusticus, with only one known population in Brazil.

Kent Ross/iNaturalist (CC BY-NC 4.0 DEED)

By Joshua Rapp Learn

American bullfrog DNA has turned up not far from the only known habitat of Pithecopus rusticus — a small, critically endangered tree frog that lives in Brazil.