I keep mom and babies in my bedroom for the first couple weeks.
Away from the other dogs and its also the warmest room of the house.
About 78-0r so.I also have a heater if it gets colder,
for the first couple weeks depending on the season..
I also use a heating pad at one side of the whelping box.
I like this because I can hear if they start whining, I pop up and check.
It may be that one got away from the others or just that mama has one up by her neck or something and they cant get latched on.
It makes for very little sleep that first week.
But I know thy're safe and well