Killer whales are one of a handful of animals that undergo the menopause . Short-finned pilot whales and killer whales are the only wild species whose females are known to lose the ability to reproduce as they age , like humans . Killer whales go through the menopause at the age of 35 years old . Post-reproductive females tend to lead groups when hunting for salmon . They are more likely to lead during lean times when salmon are hard to find . Scientists at the University of Exeter say the older females are imparting their knowledge and experience for the benefit of the rest of their family . It may help to explain why the menopause evolved in older human women .
Killer whales are one of a handful of animals that undergo the menopause . Short-finned pilot whales and killer whales are the only wild species whose females are known to lose the ability to reproduce as they age , like humans . Killer whales go through the menopause at an average age of 35 years old . Post-reproductive females tend to lead groups when hunting for salmon . They are more likely to lead during lean times when salmon are hard to find . Scientists at the University of Exeter say the older females are imparting their knowledge and experience for the benefit of the rest of their family . It may help to explain why the menopause evolved in older human women .