Why Do Cats Chase Mice

Today at school I finnaly knew why cats chase mice. Here is the story that gives us the reason.

A long, long time ago, the Celestial Empreor called all the mouse, cow, dog, dragon, cat and the rest of the zodiac signs to come. He told all the 12 animals that he wanted them to come to his house before 1:00 as he was going to hold a fantastic prize ceremony. The animals knew they were very well behaved and nodded their heads. But the cat was always sleeping! Not wanting to be late, he told his best friend, Mouse, to wake him up. The next morning, the mouse forgot to awake the cat. He ran to the Celestial Empreor's house and was the first! When the ceremony ended, the cat finnaly woken up. He was very angry as the mouse did not wake him up. And from that time on, cats always chase mice.