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

American bullfrogs have rapidly expanded their population along the Yellowstone River floodplain since their introduction. By ...

Researchers at the University of São Paulo (USP) and the State University of Campinas (UNICAMP) have conducted the most comprehensive genetic analysis ever of the American bullfrog (Aquarana ...

When exposed to potential predators as an embryo, the invasive American bullfrog becomes harder to kill when it becomes a tadpole, according to a new study by Oregon State University researchers.

Smarty may look like a calm American bullfrog, but he has a much bigger personality than you might expect. Male bullfrogs can ...

Add Yahoo as a preferred source to see more of our stories on Google. On a gray and rainy Thursday morning, I traveled south to the Billy Frank Jr. Nisqually National Wildlife Refuge. On a typical ...

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 ...

American bullfrogs were not part of Yosemite’s native aquatic fauna. The US Fish and Wildlife Service says they were introduced to Yosemite Valley in the 1950s. Image Credits: Wikimedia Commons. What ...

The throaty brummmm of bullfrogs is a sound that brings comfort to anyone in the Eastern or Southern US. It’s not typically a sound people on the West are used to hearing. Still, they have been ...

Skeletochronology of 49 American bullfrogs in South Korea reveals rapid growth to an asymptotic size more than triple that of ...

American bullfrogs are native to eastern North America but have been transported by people to many other parts of the globe, and other parts of North America, where they have readily established ...

When exposed to potential predators as an embryo, the invasive American bullfrog becomes harder to kill when it becomes a tadpole, according to a new study. When exposed to potential predators as an ...