That's a very one-dimensional analysis of a complex problem. You can't ignore the obvious physical differences and roles in reproduction. These factors affect how you relate to a larger society and to what extent you depend on it.
The problem is not of one isolated mouse but a society of mice and how your physical size, vulnerability (men don't have period pains or pregnancies) affect how you relate to society and thus your personality.
The problem is not of one isolated mouse but a society of mice and how your physical size, vulnerability (men don't have period pains or pregnancies) affect how you relate to society and thus your personality.