A cow produces around 200,000 glasses of milk in her lifetime.
373
Mars had an oxygen-rich atmosphere around 4 billion years ago
13
Lurch, a Watusi bull, had the largest horns in the world.
32
Pet dogs and elephants are the only animals that seem to instinctively understand human gesture.
14
Scientists have revived a flowering plant from a fruit stored away in permafrost by Arctic ground squirrel 32,000 years ago.
16