Adult timber rattlesnake coiled around its young

Ovoviviparous

Ovoviviparous animals produce eggs inside their body, but then give birth to live young. The eggs hatch out inside the mother and the offspring stay within her for a time. She later gives birth to the them. While they are within her, the young are fed on the yolk of the egg, and not directly from the mother's body. Ovoviviparity is a special type of viviparity. Some fish, amphibians and reptiles reproduce this way, for instance the sand tiger shark.

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Video collections

Take a trip through the natural world with our themed collections of video clips from the natural history archive.

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