An endangered orangutan was born at the Jerusalem Biblical Zoo last week. It is the first born of a 13-year-old orangutan named Suga, Ynet reported. Zoo personnel still do not know whether the baby is ...

A fossil in South Africa is evidence that therapsids, one of our ancestors, were laying eggs 252 million years ago. You can’t make a mammal-ette without laying some eggs. The duck-billed platypus wasn ...

Porcupettes are born with soft, flexible quills that harden within hours, protecting both mother and baby. Baby porcupines are precocial, able to walk almost immediately and begin climbing within days ...

Scientists have managed to film a spectacular event rarely witnessed by humans: a sperm whale giving birth while other females worked together to support the mother and her newborn. A team from ...

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 ...

Add Yahoo as a preferred source to see more of our stories on Google. Platypuses are monotremes, one of the oldest branches of mammals, and they reproduce by laying eggs instead of giving birth to ...

Scientists studying the evolution of birth in lizards, from egg-laying to live births, have pinpointed the evolutionary genes from which the species is evolving to 'build' a new mode of reproduction.

This semi-aquatic mammal may look improbable, but its biology reveals how evolution shapes even the strangest mammal bodies.