Lonna J. Nielsen, DVM, of Winterset Veterinary Center in Iowa, says the dogs’ gestation period is 62 to 65 days.
When the vulva recovers to average size, rather than when the bleeding stops, the heat cycle gets finished.
The first heat occurs between the ages of 6 and 18 months, with bigger breeds commencing.
While their reproductive cycles may become unpredictable or less regular as they age
Proestrus lasts roughly 9 days and is the initial stage of the heat cycle.
The second stage of oestrus might last anywhere from three to eleven days.
The last stage of the cycle, which usually occurs around day 14 and marks the end of the female’s permission to mate.
Your dog’s dietary needs rise only a little; her weight should remain reasonably steady, growing by no more than 9 to 10%.
You may want to supplement her food with a multivitamin, as recommended by your Veterinarian.
Make sure her meal has a lot of fatty acids, especially EPA and DHA,