What do you find your dogs average temp to be in C ? is it lower in the evening? (trying to get a base reading for my pregnant girl) seh was 37.7 at 11.30 am yesterday day 52 and today at 10.30 pm 36.4 c day 53

A drop that significant would to me indicate whelping imminent or a false alarm as I had one drop to 36.5 then go back up and not whelp for another 5days.