Else Poulsen holds a B.SC. degree in biological sciences. She has worked at the Calgary and Detroit zoos and is known internationally in the zoo and animal welfare community for her work with captive bear husbandry and rehabilitation. She has taught at conferences and workshops around the world and won the Zookeeper Excellence Award for bear research from the American Zoo and Aquarium Association in 2000. She currently lives in southern Ontario and works with zoos and other animal welfare organizations as an animal behavior specialist.
Stephen Herrero is a Professor of Environmental Science and Biology at the University of Calgary. He is recognized throughout the world as a leading authority on bear ecology, behaviour, and attacks. He lives in Calgary, Alberta, Canada.