This is the incident.

http://www.ksee24.com/news/local/City-Officials-Say-No-To-Letting-Autistic-Boy-Keep-Pet-Pig-180257001.html

The officials claim that they can not keep the pig as a pet because of an ordinance against keeping livestock. I argue that the definition of livestock is animals that are raised for products like cows for their milk, chickens for their eggs etc.
If a person keeps a pig for a pet that pig is not livestock therefore it does not violate the ordinance against livestock. Now if someone keeps cats or dogs to breed to sell the offspring those animals are livestock.

I promise to give $10,000 to the first person who can logically rebut anything in my argument.