dogs have internal fertilisation which means that thier babies grow inside of them and they do not lay eggs
external
internal
External
The 2 fertilisation's are external fertilisation, or internal fertilisation. External fertilisation is the type frogs do.
internal is in and external is out fertilisation
Internal. Dogs mate through copulation and internal fertilisation, like all mammals (including humans).
VERY INTERNAL
internal
i think internal
internal
internal
Yes