Prospective tenant requests, advice?

[Michael Pirrello]

I have 2 separate tenants each with their own unique requests.  Looking for advice on how to handle the lease and respond to these situations. Primarily the first person's request.  The German Shepherd is not yet a service dog and may not become one at all so seems ok to deny based on that.   (I have not completed the background checks on either tenant yet) 

The first person said, "I would like to sign a 12-month lease or longer for my traveling nurses, business professionals and traveling guest. If this is something we can do I would love to move forward!"  

The second said, "I have a German Shepherd that is going to be a service dog for my daughter and she will start her training in May.