Dr. Alexandra Horowitz is an Adjunct Associate Professor of psychology at Barnard College, Columbia University. She earned her Ph.D. in Cognitive Science at the University of California at San Diego. Horowitz is the Director of The Horowitz Dog Cognition Lab at Barnard College, which conducts research on a wide range of topics including dog olfaction, inter-species play behavior, and attributions of secondary emotions to dogs. In addition to many scholarly articles relating to dog behavior and cognition, she is author of Inside of a Dog: What Dogs See, Smell, and Know (Scribner, 2009), On Looking: Eleven Walks with Expert Eyes (Scribner, 2013) and editor of Domestic Dog Cognition and Behavior (Springer-Verlag, 2014).