yes
Opossums are marsupial mammals - they have internal fertilization as all mammals do.
All mammals use internal fertilization.
Whales, like all mammals undergo internal fertilization.
I am not a biologist, but I believe that all mammals have internal fertilization.
Internal - they're mammals.
Intertnal --
Internal fertilization and internal development of the fetus
Whales are mammals. They have internal fertilization.
Yes, as are all mammals.
Giraffes have internal fertilization. Giraffe gestation lasts 400 to 460-days. The mother gives birth standing up to a single calf. The mother then grooms the newborn and helps it stand up.
Lions are mammals, and use internal fertilisation.
Yes, because in mammals, internal fertilization is done through copulation, which involves the insertion of the penis into the vagina.