I'm a behavior specialist and I work in the mental health field. Any animal can qualify as an emotional support animal because they don't require any special training. Those internet sites that want you to pay for a letter are mostly scams and you can't use them. What you need to do is talk to a therapist or s psychiatrist and see if they will write a letter for you and they can also give you more direction on how you can use it. In order for you to qualify though, your animal will have to prove it can help with anxiety and that is determined by the therapist or psychiatrist. I hope that helps.