Pregnancy (mammals)
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In therian mammals, pregnancy is the period of reproduction during which a female carries one or more live offspring from implantation in the uterus through gestation. It begins when a fertilized zygo
A pregnant lioness.
14 fetuses showing stages of embryo development in the African elephant
Gestation
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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
Pregnancy (mammals)
…therian mammals, pregnancy is the period of reproduction during which a female carries one or more live offspring from implantation in the uterus through gestation. It begins when a fertilized zygote implants in the female's uterus, and ends once it leaves the uterus. Male mammals introduce sperm through the penis…
Drawing of a fetus in utero.
Pregnant scorpion