One of the most memorable experiences I had as a teacher intern last spring was an ecology class field trip to a vernal pool near my home. The kids were fully engaged, and several of the boys were determined to catch as many frogs as they could. One of the frogs that was scooped up was the ornery little bullfrog in the video below – despite spending much of my academic career as a frog researcher, I’d never heard a bullfrog alarm call before. This guy had everyone quite entertained with his screeching!