None. Cockroaches do not give birth.
Cockroaches carry around an egg case for a time before they deposit it. If you squash the roach while she is carrying around the egg case, you will squash all of the unhatched baby roaches too. Stomp hard...those egg cases are pretty tough.
Well my Dubias produce 30 babies a month. [If breeding is doing very good.]
Dolphins are mammals and so they give birth to live babies.
Yes, unless the babies die before birth.
Well yeah. If I understand your question. They don't give birth to babies that are dead. I think they all give birth to babies in eggs
Hippos are mammals and give birth to live babies.
Polar bears are mammals and give live birth.
yes they do give birth they give birth to twins but usally only one lives
Vampire babies
the have sex and give birth you get me
obstetricians
The Mother will give birth to babies with Blood Type O,
Yes, most mammals give birth to live babies. Only the platypus, and echidna (spiny ant-eater) lay eggs. Even marsupials such as the kangaroo give birth to live, albeit underdeveloped babies.