Squirrels forget where they hide about half of their nuts.
698
Bats sleep 18-20 hours per day.
5
Cats and dogs can hear ultrasound.
350
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