Lincoln Park Zoo
With a background in research Dennis’s first zoo position was as zoologist at Chicago’s Lincoln Park Zoo in 1967. Promotions came quickly to Curator of Mammals and then in 1976 he became Assistant Director to Dr. Lester Fisher. Always a believer in education Dennis has authored over 100 scientific and popular articles dealing with nature, conservation, zoo biology and zoo management. Early in his career his interest, research and publications with the Edentate group made him a world expert on the subject. His professional career has included helping to develop the fundamentals of the American Zoo Associations Species Survival Program and serving as President of the national zoo organization. He retired in 1995.