Cats recognise the voice of their owner, but never evolved to care.
22
Squirrels forget where they hide about half of their nuts.
698
Cats and dogs can hear ultrasound.
350
Termites are being researched as a possible renewable energy source as they can produce up to 2 litres of hydrogen from ingesting a single sheet of paper, making them one of the planet’s most efficient bioreactors.
24
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