it sounds a little too much like entrapment to me. Dont get me wrong Im all for service and therapy animals of all kinds however there is a difference between someone who just thought it would be a good idea to help them through a hard time and an actual registered service animal. It doesnt sound like the testers actually made it clear that these animals were actual service animals, and that its against the law to deny them. I know for a fact that many people are not aware of the many different types of service animals, allthough I guess if your a landlord it might just be your duty to know the laws. I dont know I keep going back and forth on this.