Fetal development in the mouse is routinely and increasingly utilized for advancing translational research and medical innovation for human obstetrical care. This is the first and only manual to provide necessary content on how this should be handled for accurate and effective data collection. Detailed descriptions and examples demonstrate how researchers and clinicians can use murine fetal and obstetrical data to improve future human applications in diseases such as infertility, recurrent pregnancy loss, intrauterine fetal growth restriction, placental insufficiency, and intrauterine fetal demise, as well as organ-specific developmental disease.