If I am sick at the doctor's office (or anywhere, in fact) and some obnoxious brat tried putting their paws on me and fucking trying to steal my shit, I would simply yell "FUCK OFF!!!". If I had lost my voice, I would look them in the face and cough or sneeze! It appears you need to present yourself as an actual threat to Bratleigh's safety for the moos to sit up and take notice.