Dolphins sometimes have fun by blowing bubbles and creating rings of air underwater, which they then swim through.
17
Cats recognise the voice of their owner, but never evolved to care.
22
The cat brain weighs about 30g.
167
The oldest known animal in the world was 'Ming' the 405 year old clam, discovered in 2007.
492
Cats and dogs can hear ultrasound.
350
Vampire bats adopt orphans, and are one of the few mammals known to risk their own lives to share food with less fortunate roost-mates.
402
The octopus does not have a blind spot.
273
The station master and operating officer at the Kishi Station, Japan, is a cat!
18