Get to know the American bullfrog, the giant amphibian with the bull-like bellow, and one of North America’s most widespread frog species.

The American bullfrog and the leopard frog were once the only options for frog keepers, but now there is a far wider variety of frogs to choose from. With the success of captive breeding programs, ...

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 ...

YOU could have the eye of a hawk if you can spot the animal hidden in these leaves. Somewhere in this image is a shy American Bullfrog but can you spot it in under 10 seconds?

Why do we need to worry about the spread of the American bullfrog? The introduction of any foreign animal or plant can have detrimental effects on local ecosystems, although some are more harmful than ...

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.

Soon, however, the dark quiet would be broken by the telltale sound of an American bullfrog. "Once one starts, another one starts, and then it becomes this big deafening chorus of bullfrog calls ...

Native turtles return to Yosemite after removal of more than 16,000 invasive bullfrogs As part of the study, 16,384 American bullfrogs, larvae and egg masses were removed from Yosemite National Park.

An American bullfrog tadpole, left, is bigger than the young native northwestern pond turtle in this photo. Bullfrogs often prey on native turtles in the western U.S., contributing to their decline.