Killer whales experience menopause - just like humans

Scientists are investigating this rare evolutionary trait, thought to have evolved to improve offspring's chances of survivalJust like humans, killer whales experience menopause - and the rare evolutionary trait improves their offspring's chances of survival, according to experts.Killer whales are one of only three species able to continue living long after they have stopped reproducing. This allows mothers to spend the rest of their life looking after their offspring. Continue reading...