Marc Bekoff (born September 6, 1945, in Brooklyn, NY) is an American biologist, ethologist, behavioural ecologist and writer. He was a professor of Ecology and Evolutionary Biology at the University of Colorado Boulder for 32 years. He cofounded the Jane Goodall Institute of Ethologists for the Ethical Treatment of Animals, and he is Professor Emeritus of Ecology and Evolutionary Biology at the University of Colorado Boulder.
