Well, I see that you know that Athena is a service animal.
The ADA has some good information on that one http://www.ada.gov/qasrvc.htm
I would also check out http://www.ada.gov/service_animals_2010.htm
You could also give the ADA a phone call 24 hours a day at 800-514-0301 (voice) and 800-514-0383 (TTY)
I hope that helps you out.