While I understand that you may want to learn about laws for therapy dogs, service dogs, etc., as the manager of a doctor’s office it seems you should be very knowledgeable about HIPPA law. Describing what goes on in an exam room when the physician is providing treatment, relaying that she reports she has/needs a therapy dog, and posting a picture of what the dog looks like on social media is a blatant violation of HIPPA - whether or not you post the patient’s name. The ethical, and legal, thing to do would be to discuss this with the physician or legal counsel, not to open your patient to judgement on a social media site.