[quote="BluHouse"][quote="EsqCaucasians"]A bitch’s due date is 63 days from ovulation. Please refer to Dr. Greenfield article posted earlier in thread.[/quote] Thanks but I get my information from veterinary texts, my repro colleagues or primary research not some random vet.[/quote] Random vet? Surprised you don't know him. Dr. Greenfield, Animal Clinic Northview, is collegue of internationally known reproductive veterinarian Dr. Robert Hutchinson. http://www.northviewvet.com/ DR. ROBERT V. HUTCHISON Education 1972 The Ohio State University DVM Special Interest(s) Canine Reproduction, Infertility, Pediatric Care Dr. Hutchison is the director of the International Canine Semen Bank - Ohio, a canine frozen semen center which he started in 1984. He speaks nationally and internationally to veterinary and breeder groups. Dr. Hutchison has published numerous articles, authored textbook chapters on canine reproduction, and produced a DVD on dog breeding which is available at Animal Clinic Northview. DR. BRIAN E. GREENFIELD Education 1998 The Ohio State University DVM (cum laude) 1993 University of Michigan B.A. Special Interest(s) Canine & Feline Reproductive Systems, Breeding Management In addition to general practice, Dr. Greenfield spends much of his time addressing the medical and surgical needs of professional breeders and performance dogs. These needs include genetic clearance testing such as OFA and Penn Hip, hormonal testing, manipulation, reproductive management, and an understanding of the particular needs of individual breeds. Dr. Greenfield was recently published as a contributor to a national study on canine lymphoma and will be participating in future studies of cancer in dogs. He has also published "Progesterone Testing - A Successful Breeder's Best Friend" in the Labrador Retriever Club Yearbook.