1.monkey
2.human
3.heghog
4.kangaroo
Badger
internal
human beings , monkeys & elephants (most of the mammals)
external
They use internal fertilisation.
The 2 fertilisation's are external fertilisation, or internal fertilisation. External fertilisation is the type frogs do.
Yes
internal
VERY INTERNAL
internal
i think internal
dogs have internal fertilisation which means that thier babies grow inside of them and they do not lay eggs