Service dogs

[Renita Boree]

I have a tenant who I found had recently acquired a dog without asking (this is the third time).  I agreed to allow the German Shepherd with a $200.00 pet deposit which she partially paid.   I was then given a letter from her medical Dr.  (who is not a licensed mental health professional) that her young son has attention deficit disorder and a service animal would mitigate the symptoms he is experiencing.  Now she wants me to return the pet deposit.  I did not use a real estate broker when I rented to her and this is a single family home.  Any advice would be appreciated.   Karan