Without getting too into it; yes, one cannot verify the legitimacy of service (or comfort) animals. The building I live in (and many others) have been forced to take comfort animals and often pets, that are being sold as comfort and/or service animals when it's obvious that they are just - sometimes badly treated and ill or untrained - pets. Also, only legit service animals are dogs and horses, can't remember where I learned that - may also apply to comfort animals, so no comfort skunks, skinks or snakes (on a plane - I so regret not saving the image of a plane with the "intel inside" logo morphed into a "snakes inside" logo). Also, the various professional psychiatric organizations have told their members not to sign any paperwork for 'comfort' animals due to the abuse of the program.