Cows as they are today never existed in the wild and were domesticated from aurochs some 10,500 years ago.
6
A dog's naked behind leaves absolutely no bacteria when pressed against carpet.
250
Christmas Island has bridges for crabs to stop them getting run over during the mass migration.
9
Cats sleep for 70% of their lives.
8
Scientists have revived a flowering plant from a fruit stored away in permafrost by Arctic ground squirrel 32,000 years ago.
16
A group of unicorns is called a blessing.
304