Fetus
A fetus or foetus is the stage that an organism goes through before it is born as a baby. In humans a fetus is the stage (time of development) after the embryonic stage, and begins during the third to eighth week of development after fertilization of the egg. The fetal stage lasts from 8 weeks after fertilization to birth. This stage can also take 9-12 weeks, if any mutations happen.
Fetus Media
A human fetus, attached to placenta, at three months gestational age
Diagram of the human fetal circulatory system
Fourteen phases of elephant development before birth
Fetal stage of a porpoise
3D ultrasound of 80-millimetre (3 in) fetus (about 31⁄2 months gestational age)
Fetus at 41⁄4 months
A 3D ultrasound taken of a fetus at 20 weeks.
