most give birth to live young but a few lay eggs at the bottom of the oceanYes, the eggs will hatch while they are still inside the mother's body.Most do not, they lay 'purses'. However some do such as the Spiny Dogfish.
No, penguins do not give birth to live young. They give birth to eggs.
Do horses give birth to live young? YES!
Horses give birth to live young
meerkats give birth to around 4 live young
Yes, Guppies give birth to live young.
Yes they do, like all aquatic mammals they give birth to and nurse live young.
Yes, gorillas give live birth.
Both placental mammals and marsupials give birth to live young.
they are mammals, so they give birth to live young.
Raccoons are placental mammals and give live birth to their young.
Actually aphids give birth to live young!