For the purpose of selling, loading and shipping any horses, cows, pigs, hogs, goats, sheep or chickens, it shall be lawful to keep the same in loading pens provided for said purpose, but no such animals shall be kept in such pens within the corporate limits of the City for a period of more than thirty six (36) hours except by written permission of the sanitation inspector. (1958 Code ch. VII art. 1; amd. Ord. 2197, 3-16-1987)