THE GENTLEMAN CAT
Two men sought to prove to their king whether a man had to be "born a gentleman" or could become one by "discipline and training." The one told the other that he would prove his point regarding "training" by showing the king his cat, which he had trained to stand on its back feet and dance around in a funny hat with its nose in the air.
This gave the other an idea but he did not tell the other about it. When they came before the king the one set his cat to dancing to "prove" to the king that being a gentleman is just about training and discipline. The other pulled out a box he had brought with him, opened it, and let loose about a dozen mice. The cat quickly reverted to its primary nature and took off after the running rodents.
Some pretty good dancing cats show up in this building and put on a pretty good show, but sin will still show itself given the right opportunity.