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.

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 ...

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, ...

In the war against invasive species, it’s not clear that Arizona is winning. "We're losing, just like everyone else,” said ...

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 it ...

After six years and thousands of euthanized bullfrogs, a campaign to control the invasive species in the Upper Deschutes Basin is starting to show results. The number of bullfrogs visible in pools of ...

When Josephine Hansen and fellow Girl Scouts spent a summer evening catching 14 bullfrogs at Corn Lake in 2022, it was a bad day for the bullfrogs but a good day for citizen science and efforts to ...

The call of American bullfrogs was deafening when scientists from UC Davis first began researching the impact of invasive bullfrogs on native northwestern pond turtles at Yosemite National Park. “At ...

Sidney Woodruff of UC Davis holds a northwestern pond turtle at a field site in Yosemite. (Courtesy Sidney Woodruff) The call of American bullfrogs was deafening when scientists from the University of ...

As a canopy of stars unfurled across the landscape of Namibia, a “golden” creature sat in a shallow pond. The animal’s size and “aggressive” nature made it easy to spot. When scientists found the huge ...