American bullfrog populations have exploded around the world with dire consequences for native wildlife. But researchers say they may have found a way to help these species rebound. American bullfrogs ...

Conservation gets complicated when a native U.S. species is appreciated in one part of the country but despised in another. Consider, if you will, the American bullfrog. “In the Eastern U.S., where it ...

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. These neon green, orange and black frogs ...

The turquoise frog in Victor Berthelsdorf’s pond may look pretty, but for local turtles, bugs and other animals, it is anything but. Berthelsdorf first spotted the brilliantly colored American ...

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