[quote=lynnicks]Read the questions carefully 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] No. The pups begin to overgrow and placentas detach after 63 days (from the date of ovulation determinable only by hormone testing). If the birth process doesnt start by the 63rd day, the pups' heartbeats should be monitored by ultrasound to determine if they are in distress.