Guru Byte - The Sneaky Rat and The Dumb Ox

Legend holds that to decide the order of the cycle, the animals would have a race across a river. 

Now the Ox was the strongest of the twelve and was expected to win, but another creature was the craftiest – The Rat.

Being the smallest of the animals, The Rat was able to climb onto the back of the ox without being noticed.

As expected, Ox crossed the river faster than all the others, but just as he was about to step onto shore Rat leaped onto the bank and was named the winner.