Viviparous and Oviparous Animals
Oviparous and viviparous animals are two different groups of animals, which are classified on the basis of fertilization. The main difference between oviparous and viviparous animals are listed below:
| Oviparous | Viviparous |
| Meaning | |
| Egg-laying animals | Animals that give birth to the young ones |
| Fertilization | |
| Either internal or external | Fertilization is internal |
| Nutrients to the developing embryo | |
| Provided by the egg yolk | Provided by the mother through the placenta |
| Development of zygote | |
| There is very little or no development of the embryo inside the mother. | The embryo develops entirely inside the mother. |
| Survival chances | |
| There are fewer chances of survival since the eggs are laid outside the body | The young one is protected inside the mother and so the chances of survival are more. |
| Examples | |
| Insects, hens, fish, amphibians, etc. | Humans, dogs, cats, horses, etc. |
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