By Anne Lichtenwalner, DVM Ph.D., University of Maine Cooperative ExtensionReviewed and updated by Dana Hill, DVM, MS, Ph.D., DACVP, University of Maine Cooperative Extension For information about UMaine Extension programs and resources, visit extension.umaine.edu.Find more of our publications and books at extension.umaine.edu/publications/. Syngamus tracheae, or the “gapeworm,” is one of several worms that can live