page_title: Pregnancy (mammals)
hierarchical_section_title: Pregnancy (mammals)
caption_attribution_description: Pregnant lioness.
context_page_description: In 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.
context_section_description: In 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.
caption: A pregnant lioness.
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