Add Yahoo as a preferred source to see more of our stories on Google. The American bullfrog is native to the eastern United States but was introduced in the West. Voracious eaters with large mouths, ...

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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 ...

The backyard drama last week wasn't exactly cat-and-mouse. Imitating his purring ancestors, the neighborhood's resident black-and-white feline warily crept across wet grass to get a closer look at an ...