I'm going to lie about my service dog's name
Why do you want to lie about their name?
I don't want anyone to know that he is mine.
Lying about your service dog's name just to protect your own identity is wrong. Be honest about his name and his relationship to you.
I have no clue on what you mean. The dog's name is a secret.
There's no reason to lie about such a thing. Be proud that you have a well trained dog that can help save lives!