Newborns: How Baby Animals Come Into the World

Did you know that Darwin's frogs hatch as tadpoles in their father's mouth? Or that a baby giraffe has to survive a six-foot fall because its mother is standing when it's born?

What about how a baby dolphin has to swim up to the surface immediately after it's born to take its first breath? Some gestation periods are days; some are years. Some babies are born ready to fend for themselves while others rely on their parents for months. From scorpions to ravens to red kangaroos, all animals hav...