Cows as they are today never existed in the wild and were domesticated from aurochs some 10,500 years ago.
6
One reason that kittens sleep so much is because a growth hormone is released only during sleep.
212
Cows can sleep standing up, but they can only dream lying down.
745
Meysi is one of the world's smallest dogs, measuring in at just 7cm tall, 12cm long, and weighing a meagre 250 grams (only slightly heavier than a hamster!)
11
Pet dogs and elephants are the only animals that seem to instinctively understand human gesture.
14
It would take about 1,200,000 mosquitoes to fully drain the average human body of blood.
217
Scientists have revived a flowering plant from a fruit stored away in permafrost by Arctic ground squirrel 32,000 years ago.
16
Dolphins have names for one another.
18