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 ...

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 ...

The baritone call of the bullfrog is so deep and resonant, it resembles the mooing of a cow, hence its name. Only males emit this trademark "jug-o-rum" bellow, and their choruses can be heard during ...

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 call of American bullfrogs was deafening when scientists from the University of California, Davis, first began researching the impact of invasive bullfrogs on native northwestern pond turtles at ...

Thanks to Americans developing a taste for frog legs, the American bullfrog has become both a native and invasive species in its native country. Vox reported on the rampant American bullfrog problem, ...

Listen for Missouri’s largest frog, and official state amphibian, at the water’s edge this week. The American bullfrog is a popular game species in Missouri, and may be pursued from sunset on June 30 ...

A "constellation of eyes" welcomed Sidney Woodruff the first time she went nighttime frog spotting at Yosemite National Park. Her headlamp lit up thousands of eyes that belonged to the invasive ...