Cats recognise the voice of their owner, but never evolved to care.
22
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
Squirrels forget where they hide about half of their nuts.
698
Denmark has twice as many pigs as there are people.
66
Alligators can live up to 100 years.
337
Only 3% of bird species have penises.
0