Few people realize that coyotes prowl the country's major urban areas. By tracking them on their turf, one Boston-area high school teacher and his students are helping scientists to learn more about the oft-misunderstood animals. Here, the author features David Eatough, a science teacher at Revere High School just north of Boston, and his students, Joe Dreezen and Kevin Welch, who have captured, collar, and track coyotes through urban neighborhoods. The behavior of these animals in urban settings--how they move about, what they eat--is not well understood, so Eatough and his students are helping develop a profile of the species through the Eastern Coyote Ecology Study.