When a male gentoo penguin "falls in love" with a female penguin, he searches the entire beach to find the perfect pebble to present to her.
25
The octopus does not have a blind spot.
273
The oldest known animal in the world was 'Ming' the 405 year old clam, discovered in 2007.
492
The cat brain weighs about 30g.
167
Alligators can live up to 100 years.
337