Cats recognise the voice of their owner, but never evolved to care.
22
An average cat has 1-8 kittens per litter and can have 2-3 litters per year. During her productive life, one female cat could have more than 100 kittens. A single pair of cats and their kittens can produce as many as 420,000 kittens in just 7 years.
10
Hummingbirds can weigh less than a penny!
12
The fingerprints of koala bears are virtually indistinguishable from those of humans, so much so that they could be confused at a crime scene.
73
Flamingos pee on their legs to cool themselves off.
49
It has been estimated that a bite from a grizzly bear can crush a bowling ball.
11
The quills of a porcupine are soft when they are born.
90
Giraffes are unable to cough.
50