The effects of testosterone propionate on aggression in male and female C57BL/10 mice

Young gonadectomized males and females C57BL/10 mice were given one 0.5 mg. injection of testosterone propionate at 40 days of age and tested for their aggressive responses on the succeeding 10 days. The males responded more aggressively towards each other than did the females. The two most likely explanations of these results are that either the nervous systems of both sexes respond differentially to testosterone or that females do not provide as adequate a stimulus for releasing aggressive responses as do the males.