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

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 ...

Arizona introduced American bullfrogs nearly a century ago for food and hunting. Today, the invasive predators threaten ...

Efforts to revive the Chiricahua leopard frog habitat in Southeastern Arizona encountered severe obstacles. The introduction of invasive American bullfrogs disrupted local frog populations ...

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 ...

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 ...

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.

“Adult American bullfrogs have voracious appetites and will eat anything they can fit into their mouths, including invertebrates, birds, bats, rodents, frogs, newts, lizards, snakes, and turtles.

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 ...

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 ...

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 ...