Gestation
Videos
Gestation is the period of development during the carrying of an embryo, and later fetus, inside viviparous animals. It is typical for mammals, but also occurs for some non-mammals. Mammals during pre
Drawing of a fetus in utero.
Pregnant scorpion
Birth
Videos
Birth is the act or process of bearing or bringing forth offspring, also referred to in technical contexts as parturition. In mammals, the process is initiated by hormones which cause the muscular wal
Lambing: the mother licks the first lamb while giving birth to the second
An illustration of normal head-first presentation by the obstetrician William Smellie from about 1792. The membranes have ruptured and the cervix is fully dilated.
A cow giving birth
A kangaroo joey firmly attached to a nipple inside the pouch