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Difference between Oviparous and Viviparous animals (Oviparous vs Viviparous)

Oviparous animals are animals that lay eggs, with little or no other embryonic development within the mother.
Example of Oviparous animals:  This is the reproductive method of most fish, amphibians, reptiles, all birds, the monotremes, and most insects, some molluscs and arachnids.
Viviparous animals are those that give birth to live young.
Examples of viviparous: Marine mammals such as whales and dolphins, pinnipeds, sirenians and sea otters. Viviparous plants (Mangroves)
Oviparous animals  vs Viviparous animals
  • Oviparous animals lay fertilized or unfertilized eggs.
  • The fertilized eggs remain covered by hard calcareous shell and laid in safe place in the environment. After a period of incubation young ones hatch out.
  • Chances of survival of young ones is less as the female lay egg in the open environment.
Viviparous animals
  • Viviparous animals birth to young ones.
  • The fertilised egg (zygote) develop into a young one inside the body of the female organism.
  • Chances of survival of young one is more  because of proper embryonic care and protection inside the mother’s body.


  1. which is the animal that is viviparous as well as oviparous??

    1. Platipus is viviparous but it lays eggs

    2. Arthropods are oviparous as well as viviparous

    3. Leeladhar nagda25 March 2017 at 08:54

      Arthropods are mostly oviparous
      Exception: scorpions.

    4. Leeladhar nagda25 March 2017 at 08:55

      Arthropods are oviparous only
      Exception: scorpions.

    5. Leeladhar nagda25 March 2017 at 08:56

      Arthropods are oviparous only.
      Exception: scorpions.

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  4. Give more info with more examples

  5. Give more info with suitable examples

  6. Give more info with suitable examples

  7. And even sea horses r viviparous coz even though it looks like the young ones r out from the male.
    The male has a sack like structure where it keeps the eggs transferred from the female after mating.


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