Lions Sync When They Ovulate—But People Don't
The African big cats give birth around the same time so that they can take care of each other's cubs.
While researching lions in Zambia, biologist Thandiwe Mweetwa noticed that lionesses within a pride will all have cubs around the same time.
When she looked into it further, Mweetwa learned lionesses sync their fertility cycles so that they can all raise their young together.