Rachel Robertson: Rachel Robertson, MA, is the director of education and development at Bright Horizons. She has more than twenty years of experience in the education field and has served as a professional development and education quality consultant, classroom teacher, center director, and quality and training manager. She is the author of numerous early childhood articles and presents professional development seminars at national conferences. Rachel holds a master''s degree in early childhood education.Priscilla Prentice: Priscilla Prentice studied illustration at the Rhode Island School of Design. Upon graduation she worked as an animator and eventually settled as an environmental artist for video games. After having children she resumed her illustration career. When You Just Have to Roar! is her picture book debut. Priscilla lives in Connecticut with her husband and two sons.