[quote=EsqCaucasians]Days are counted from the DATE OF OVULATION, not the date of breeding. Ovulation date can only be determined accurately by hormone testing sent out to laboratory.[/quote] [quote=lynnicks] I asked if 63 days is normal I already know the answer but was wondering whether anyone could enlighten me on whether there could be a reason to go to 67 days without going to the vet. [/quote] 63 days is the generalized average, this means some dogs will whelp sooner, some later, 67 days is within reason although I would be nervous if it was my own dog. This is from the LH surge ovulation, two completely different things. To get an appropriate idea of timing and to safely schedule a caesarian section, progesterone testing, vaginal cytology and vaginal morphology all must be considered. AI using frozen semen can be quite successful and is an important tool when dealing with small populations- what a great way to reintroduce lost variation in any breed. Frozen semen does not require surgical AI, although I would recommend at least transcervical AI to my clients so that a reasonable success rate can be achieved. Insemination dates post LH surge do vary depending on type of insemination (natural, vaginal AI, transcervical AI, surgical AI) and type of semen (fresh, chilled, frozen) that info is found on PubMed or through an experienced veterinarian. Robin