The American bullfrog — a notoriously invasive species that will eat almost anything it can fit into its mouth — is alive and well in Vancouver’s Stanley Park.

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 ...

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 ...