Kellie Snider, M.S., is a behavior analyst, author, and consultant based in Pittsburgh, PA. She developedthe influential Constructional Aggression Treatment (CAT) method during her graduate studies at theUniversity of North Texas, where she earned her M.S. in Behavior Analysis. Her work has focused ontreating canine aggression through humane, science-based strategies. Kellie spent over a decade inshelter behavior management and six years in private practice. She is the author of Turning Fierce DogsFriendly, first published in 2018, and has presented CAT internationally. Kellie also works as an artist andwriter, blending creativity with science and compassion.