Unsinkable Sam (nickname of a German ship's cat) who served on 3 warships, one German, two British, all sank in action. The cat survived each sinking, floating away on wooden planks to rescue.
19
There is a 600 year old 240 paged book called the Voynich Manuscript, that’s written language is still completely unknown today.
15
The exact cause of death and burial site of Genghis Khan is unknown, because all of the 2000 funeral guests and 800 soldiers were killed in order to preserve the secret.
16
In 1949, an official boxing match between a bear and a man was held. The bear won.
41
In 1918, a homing pigeon saved over 190 American soldiers by delivering a message to nearby support despite having been shot through the breast, blinded in one eye, covered in blood, and with a leg hanging on by just a tendon.
22
When Charles Darwin first discovered the Galapagos Tortoises, he tried to ride them!
18