Common dolphin with a newborn calf that is still showing foetal folds

Viviparous

Viviparous animals bear live young that have developed inside the mother's body. Most familiar to us in mammals, there are a few unexpected ocurrences in animal groups usually associated with egg-laying such as reptiles, amphibians, fish and scorpions. The term can also be applied to some plants, such as certain kinds of succulents and waterlilies, where the seeds germinate while still attached to the parent.

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Animals with this behaviour

Mammals

Reptiles

Cartilaginous fish

Lobe-finned fishes

Arachnids

BBC News about Viviparous

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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