Overall comparison of means of cortisol hormone levels between control and stressed mothers, Litter size and Offspring weight gain. A. Overall comparison of means of cortisol hormone levels from all control mothers and all stressed mothers during pregnancy; B, Correlation between the number of pups bornand weight (in grams) gained by the mother during pregnancy; C, Mean weight (ingrams) of male offspring at age 4, 8, 12 and 16 weeks; D, Mean weight (in grams) of female offspring at age 4, 8, 12 and 16 weeks.