Question

Difference between oviparous and viviparous?

Answer 1

oviparous : they are the animals that lay eggs and they are not mammals.
example : snakes, birds.

viviparous : they are the animals that give birth to their young ones they are called ad mammals
example : elephants, humans, tigers etc.

hope so my answer is useful  

Answer 2

viviparous animals
 animal which have birth to young one is known as viviparous
 in viviparous animals the embryo develops inside the body of the female from which its gains nourishment
EX:dog,cow,cat,rat and human beigns.

oviparous animals
 animals which lay eggs are called oviparous animals.the eggs are then hatched by  the mothers
 oviparous animals lay eggs before the embryo start developing with little or no other development within mother
EX:lizard,frog,fish,snake,crow,hen,butterfly.

i hope this useful for u