Well-Nourished Mothers
A dog's appetite increases only gradually in early pregnancy. During the first five weeks, she needs only a balanced diet with normal-sized meals.
After the fifth week, increase her energy consumption (calories) by ten percent per week until the birth.
Some animals, including those experiencing a false pregnancy, can suffer from morning sickness. Scientists think this is a natural way in which a mother minimizes her fetuses' exposure to toxins.
Hormonal changes can also be the reason why some dogs develop food aversions in pregnancy. Be wary of all unnecessary drugs and chemicals during early pregnancy.