Why do they look so blood red? Readers discover why the hippo's mysterious sticky sweat is something the hippo does not want to wash off. Then visit with the scientist who tried to uncover the secret of a mysterious organ inside the horse's head. They'll follow the scientist who found out why it is good for the giraffe to have such a strong scent and accompany the scientist that combined humongous toys and hard work to find out what the lion's mane...