Cows as they are today never existed in the wild and were domesticated from aurochs some 10,500 years ago.
6
Blue whale arteries are large enough for humans to swim through and their hearts are the size of cars.
12
Dolphins sometimes have fun by blowing bubbles and creating rings of air underwater, which they then swim through.
17
Honeypot ants are a unique insect that use their own bodies as living storage pots of honey.
4
Sandy, an African Penguin, has been in 'love' with her keeper at the Nuremburg zoo since 1996.
34
15% of snails survive digestion by birds and are found alive in their droppings, potentially leading to the spread of snail populations.
1