Book excerpt: In this issue of Veterinary Clinics: Small Animal Practice, guest editor Dr. Bruce W. Christensen brings his considerable expertise to the topic of Small Animal Theriogenology. Top experts in the field cover key topics such as progesterone analysis in canine breeding management; genetic screening in a canine breeding program; body condition and fertility in dogs; medical management of the pregnant bitch; elective Cesarean sections; an updated perspective for advising clients on spay-neuter of their dogs; and more. Contains 16 relevant, practice-oriented topics including cardiac disease and screening in breeding dogs; nutrition for the pregnant bitch and puppies; canine neonate health; early puppy behavior: tools for later success; canine pyometra update; and more. Provides in-depth clinical reviews on small animal theriogenology, offering actionable insights for clinical practice. Presents the latest information on this timely, focused topic under the leadership of experienced editors in the field. Authors synthesize and distill the latest research and practice guidelines to create clinically significant, topic-based reviews.