Add Yahoo as a preferred source to see more of our stories on Google. Q. When we studied high school biology, our teacher said more than 99% of animals lay eggs and only a few give live birth. That ...

Beyond birds, a surprising array of animals reproduce by laying eggs. From the unique monotremes like the platypus and echidna to reptiles, amphibians, and intelligent octopuses, this ancient strategy ...

We often think of the egg-laying reproductive strategy in nature as being employed by birds. Indeed, while many people ...

Animals reproduce in a variety of fascinating ways. Some species, including humans and many other mammals, give birth to live young that develop inside the mother’s body. Others reproduce through less ...

Birds may be the most famous egg-layers, but they’re far from the only ones! Across the animal kingdom, reptiles, amphibians, fish, and even a few rare mammals rely on this ancient method of ...

Eggs helped animals conquer land—but most mammals stopped laying them. Why is that? Why do most animals lay eggs, while humans and most mammals give birth to live young? In this episode of Big Ideas ...

Q. When we studied high school biology, our teacher said more than 99 percent of animals lay eggs and only a few give live birth. That percentage seems too high. Humans, dogs, cats and cows are ...

Add Yahoo as a preferred source to see more of our stories on Google. Animals reproduce in a variety of fascinating ways. Some species, including humans and many other mammals, give birth to live ...