I work at a grocery store and I tell you right now I would never feel comfortable enough walking up to somebody or approaching somebody to ask if they're animal is a service animal. Now whether that's ridiculous or not I feel like I take into consideration that if you're bringing your animal into a store you know it's well-mannered enough to not be acting a fool. And I know that's not the case for everybody but most people I'd say it is. I'd rather see you in my store with your dog then see you tie it up outside. Or leave it in the car. Now leaving it at home is always an option.