How come women live for decades beyond menopause? - Menopause is a downright bizarre trait among animals. It's also rare. Outside of the human species, only the female members of two whale species outlive their reproductive lives in such a major way.
This ancient whale, extinct 25 million years, was a vicious hunter, scientists figure. Though likely an ancestor of modern baleen whales, gentle giants of seas this beast had monstrous teeth and huge eyes thought to have been good for hunting.
A Mystery Whale Species Finally Makes an Appearance