Alexandra Horowitzis the author of the bestselling Inside of a Dog: What Dogs See, Smell, and Know. She teaches psychology, animal behavior, and canine cognition at Barnard College, Columbia University. She earned her PhD in Cognitive Science at the University of California at San Diego, and has studied the cognition of humans, rhinoceros, bonobos, and dogs. For seventeen years she shared her home with an unwitting research subject, Pumpernickel, a wonderful mixed breed. Now her Dog Cognition Lab studies the behavior of owned dogs to keep discovering what they see, smell, and know.
 
Before her scientific career, Horowitz worked as a lexicographer at Merriam-Webster and served on the staff of The New Yorker. Her latest book, On Looking: Eleven Walks with Expert Eyes, was published in 2013. She lives in New York City with her husband, young son, and two large, non-heeling dogs.