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 ...

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 ...

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 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 ...

The American bullfrog is expanding into Yellowstone River in Montana. The invasive species, relatively new to this area, is expanding rapidly, eating everything in its wake, including, sometimes, ...

If you liked this story, share it with other people. Santa Cruz, California has become the first city in the U.S. to ban the importation, sale, release, and possession of the American bullfrog (Rana ...

It's a Louisiana staple, the American bullfrog! Meet the Louisiana Purchase Gardens and Zoo's ambassador animal.

For the first time researchers have identified American bullfrogs as potentially suitable hosts for E. coli O157:H7, a common source of food-borne illness. Escherichia coli O157:H7 is a major food ...

Photographer Robin Loznak is one of our longest standing regular contributors to Animal Tracks from over the years, and his images of the daily life of North American animals of all sizes and shapes ...

Amphibians are cold-blooded animals that can live both in the water and on land. When we think of amphibians, frogs and toads instantly jump to mind. Usually, we think of frogs as being quite small.

A control program on southern Vancouver Island provided the carcasses of over 5,000 adult and juvenile invasive alien American bullfrogs. Examination of their stomach contents confirms that bullfrogs ...