Cats recognise the voice of their owner, but never evolved to care.
22
Cows as they are today never existed in the wild and were domesticated from aurochs some 10,500 years ago.
6
The oldest creature ever found was Ming the clam at an admirable 507 years old.
16
Dolphins can rapidly heal from extreme injuries, such as shark bites, and regenerate their original body shape.
19
When the "Elephant Whisperer" Lawrence Anthony died, a whole herd of elephants arrived at his house to mourn him.
25
A cat rubs against people not only to be affectionate but also to mark out its territory with scent glands around its face. The tail area and paws also carry the cat's scent.
293
Domestic pigs average a top speed of about 11 miles per hour.
182
The colossal squid has the largest eyes in the world.
4