

The National Zoo conducts research to aid in the survival or recovery of species and their habitats, and to ensure the health and well-being of animals in captivity and in the wild.
Our scientists are world leaders in conservation biology who work all over the globe.
Head
Russell Greenberg, Ph.D.
Senior Research Scientist Emeritus
Eugene Morton, Ph.D.
Research Scientist
Robert Rice, Ph.D.
Research Scientist
Scott Sillett, Ph.D.
Research Scientist
Pete Marra, Ph.D.
Head and Scientist
John Seidensticker, Ph.D.
Senior Research Scientist
John H. Rappole, Ph. D.
Ecologist
William J. McShea, Ph.D.
Conservation GIS Lab Director
Peter Leimgruber, Ph.D.
Conservation GIS Lab Manager
Melissa Songer, Ph.D.
Research Associate
Wolf Dittus, Ph.D.
Research Associate
Daryl Boness, Ph.D.
Head
Robert Fleischer
Research Scientist
Jonathan D. Ballou, Ph.D.
Research Associate
David Powell, Ph.D.
Senior Scientist
Katherine Ralls, Ph.D.
Head
Francisco Dallmeier, Ph.D.
Director of Conservation and Development
Alfonso Alonso, Ph.D.
Research Scientist
Miles Roberts
Education Program Manager
Jennifer Buff
Administrator
Tatiana Pancheco
Head and Senior Scientist
David E. Wildt, Ph.D.
Reproductive Physiologist
Janine L. Brown, Ph.D.
Cheetah Research Biologist
Adrienne E. Crosier, Ph.D.
Wildlife Biologist
Brian Gratwicke, Ph.D.
Fish Physiologist
Mary Hagedorn, Ph.D.
Theriogenologist
JoGayle Howard, DVM, Ph.D.
Reproductive Physiologist
Katharine M. Pelican, DVM, Ph.D.
Gamete Biologist
Budhan Pukazhenthi, DVM, Ph.D.
Gamete Physiologist
Nucharin Songsasen, DVM, Ph.D.
Research Associate
Rebecca E. Spindler, Ph.D.
Gamete Biologist
Pierre Comizzoli, DVM, Ph.D.
Research Associate
I. Kati Loeffler, DVM, Ph.D.
Research Associate
Micaela Szykman, Ph.D.
Research Associate
Samantha M. Wisely, Ph.D.