Not sure where I stand on them, but this article is hilarious:

<< I decided to go undercover as a person with an anxiety disorder (not a stretch) and run around town with five un-cuddly, non-nurturing animals for which I obtained E.S.A. credentials (one animal at a time; I’m not that crazy). >>

http://www.newyorker.com/magazine/2014/10/20/pets-allowed

Best part is when she brings an alpaca around NYC and tells people it's her emotional support animal. Also, when she brings a pig on JetBlue and has her sit in her lap.