Once upon a time in a certain place in Africa lived a king who owned two pets; a dog and a cat. Aside the kings guard, the cat and the dog were very useful to him. The dog had served the king quite some good years so he can be trusted with important errand, though very old. Cat the dog's companion was quite cunning but stronger and smarter.
The king had a daughter schooling at a convent some distance from home, and very often he sent the dog and the cat with presents to her.
One day he called the animals and sent them on an errand to convey a magic ring to his daughter.
"You hold the ring because you seem to be strong and smarter," the king said to the cat.