Cats recognise the voice of their owner, but never evolved to care.
22
The colossal squid has the largest eyes in the world.
4
Sandy, an African Penguin, has been in 'love' with her keeper at the Nuremburg zoo since 1996.
34
Rattlesnake mating sessions have been known to last more than 22 hours.
232
In Australia, there are spiders big enough to eat snakes.
20
Early American humans hunted car-size armadillos and used their shells for houses.
12
Queen ants have one of the longest life-spans of any known insect - typically up to 30 years. Western harvester ant queens can live up to 40 years!
2