they do not fertallise there babys. so therefore internally :)
As a mammal moose have internal reproduction
yes mammals do use internal reproduction as they are more likely to survive longer as they are less likely to be eaten.
internal
Sex and that
Internal
Marine mammals have internalized genitalia for streamlining.
Sexual reproduction is the mode of reproduction for cows. They use internal fertilization which means the egg is fertilized inside the cow.
Internal reproduction
No, koalas are mammals, so have an internal skeleton.
It has sexual reproduction - by means of internal ferilization.
testes
its internal and then its external. DEERRR