Penguins(female) lay large eggs, then the Male will keep it warm while the MOM feeds herself, they will take turns to keep the egg warm until it hatches, if you rent the movie " March of the Penguins" you will see, this is a must see film, you will remember it for the rest of your life.
a carefully selected pebble in some species
I do not know. Why can't you answer it. That's my answer.
There are no penguins at the North Pole, or in the Arctic at all.
penguines
penguines
All (female) fish give birth.
The answer is: a pack ! Isn't that easy?
Yes. As a mammal, all monkeys and primates give 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
a few but not all and i only have one to share with you, the bat
No! Most mammals give birth the same way except for the platypus which lays eggs and all other mammals give live birth
No. Only female cats that have not been spayed can give birth.