This field exercise examines the feeding preferences of Gray Squirrels ("Sciurus carolinensis"). Students present squirrels with a variety of food types in a cafeteria-style arrangement in order to test hypotheses about foraging preferences. This exercise, which is appropriate for introductory biology, ecology, and animal behavior classes, is designed to allow students to be involved in the entire scientific process. Students design the experiment, collect the data, and analyze and interpret the results. (Contains 4 figures.)