Vivipary

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A viviparous animal is an animal employing vivipary: the embryo develops inside the body of the mother, as opposed to outside in an egg (ovipary). The mother then gives live birth. The less developed form of vivipary is called ovoviviparity, which, for instance, occurs in most vipers. The more developed form of vivipary is called placental viviparity; mammals are the best example, but it has also evolved independently in other animals, such as in scorpions, some sharks, and in velvet worms. Viviparous offspring live independently and require an external food supply from birth. Certain lizards also employ this method such as the Genus Tiliqua and Corucia. The placenta is attached directly to the mother in these lizards which is called viviparous matrotrophy.

See also

• Oviparity
• Ovoviviparity
• Placental mammals
• Marsupials
• Live-bearing aquarium fish
• False vivipary

de:Vivipariefr:Viviparité ga:Beobhreitheach hr:Viviparnost it:Vivipari nl:Viviparie ja:胎生uk:Живородний

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