Scientists have captured detailed, clear images of the boys.
The unique project of National Geographic and director Peter Chinn has left the world in awe.
These people were able to show the world the development process of babies in the womb. They showed how the babies of different animals look before birth. For the first time, researchers have created obvious and detailed pictures.
It’s not surprising to see such a lovely creature grow up into wild and healthy animals.
Penguins in an egg
Cheetah in the womb
A pair of polar bears
The babies are so cute, what do you think?