“One reason American bullfrogs are among the top worst globally introduced pests is because they eat everything — anything that fits into their mouth,” said senior author Brian Todd, a UC Davis ...

The American bullfrog is native to the eastern United States but was introduced in the West. Voracious eaters with large mouths, their diets can include birds, bats, rodents, newts, snakes, and ...

Yosemite’s ponds used to echo with the booming calls of invasive bullfrogs, which devoured young turtles, newts, birds, and more. Now, with bullfrogs nearly gone, native sounds are returning—and so ...

Sidney Woodruff has spent multiple summers hiking six or seven miles to a remote corner of Yosemite National Park where she has camped out next to ponds and lakes. "At night," Woodruff says, "you look ...

American bullfrog populations have exploded around the world with dire consequences for native wildlife. But researchers say they may have found a way to help these species rebound. American bullfrogs ...

As winter tightens its grip across southern Manitoba, the ponds, forests and wetlands that were alive with movement just months ago appear to fall silent. The chorus of frogs fades, turtles disappear ...

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 ...

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 ...