Every veterinary student feels apprehensive about clinics, and in 1992, when Sophia Yin was a veterinary student, she was no different. To beef up their brain power, students in veterinary school at UC Davis compiled clinically useful notes in pocket-sized binders which they informally called nerdbooks. Because of her well-honed notetaking and organizational skills, Sophia and her compilation were soon deemed the nerdiest. Fellow students offered to buy her book and she willingly shared her pages. And soon she thought, "Hey, if I publish this book, then all vet students could learn the important stuff faster and feel more confident in clinics."

So during her senior year she sought the advice of two professors. Could a student really publish a textbook? She got a thumbs up from two professors who had published their own books and that was all she needed. CattleDog Publishing was born.

The Nerdbook was an instant success selling over 4,500 copies in the first year.

CattleDog Publshing continues to serve as a vehicle for her mission to improve our understanding of animals their health and behavior so that we can care for, appreciate and enjoy our time with them better.

Sophia only pursues projects that are interesting and creative and fun for her. She gathers information from diverse sources, ensures they are well-founded in science and then creates practical strategies and techniques that can be used in every-day situations by professionals as well as pet owners.

Dr. Sophia Yin has her DVM and MS in Animal Behavior from University of California – Davis. In addition to writing and publishing, she also lectures and teaches workshops internationally on animal behavior and low stress handling and has served as a behavior expert for shows such as Dogs 101 on Animal Planet. She is also on the executive board for the American Veterinary Society of Animal Behavior (link to and was on the American Association of Feline Practitioners (AAFP) Handling Guidelines Committee. For more information about Dr. Yin, please see